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Hemirhamphodon pogonognathus (Bleeker 1853) Hemirhamphodon pogonognathus: Ahmad et al., 2014: 20 (Sungkai Wildlife Reserve); Authors' data (Pondok Tanjung; Gopeng; Sg. Bongkok)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 538, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047

Monopterus javanensis Lacep��de 1800 Monopterus javanensis: Ahmad et al., 2014: 20 (Sungkai Wildlife Reserve); Ahmad & Zakaria-Ismail, 2014: 415 (Sg. Cha Chor; Sg. Kejar; Sg. Ketir; Sg. Mes; Sg. Tiang); Shafiq et al., 2014: 826 (Sg. Ara; Sg. Jelai; Sg. Kurau; Sg. Merah); Authors' data (Pondok Tanjung; Malim Nawar; Sg. Bongkok; Sg. Kampar; Sg. Ulu Kenas)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 534, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Ahmad, A. & Zakaria-Ismail, M. (2014) Additional native fish fauna of rivers & streams flowing into Temengor reservoir, Perak, Malaysia. Malayan Nature Journal, 664, 407 - 419.","Shafiq, Z. M., Shah, A. S. R. M., Zarul, H. H., Syaiful, M. M., Khaironizam, M. Z., Khaled, P. & Hamzah, Y. (2014) An annotated checklist of fish fauna of Bukit Merah Reservoir and its catchment area, Perak, Malaysia. Check List 10 (4), 822 - 828. https: // doi. org / 10.15560 / 10.4.822"]}

Datnioides polota (Hamilton 1822) Datnioides polota: Herre & Myers, 1937: 29 (Telok Anson)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 538, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Herre, A. W. C. T. & Myers, G. S. (1937) A contribution to the ichthyology of the Malay Peninsula. Bulletin of the Raffles Museum, 13, 5 - 75."]}

Doryichthys martensii (Peters 1868) Doryichthys martensii: Ahmad et al., 2014: 20 (Sungkai Wildlife Reserve); Shafiq et al., 2014: 826 (Sg. Ara); Authors' data (Pondok Tanjung)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 532, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Shafiq, Z. M., Shah, A. S. R. M., Zarul, H. H., Syaiful, M. M., Khaironizam, M. Z., Khaled, P. & Hamzah, Y. (2014) An annotated checklist of fish fauna of Bukit Merah Reservoir and its catchment area, Perak, Malaysia. Check List 10 (4), 822 - 828. https: // doi. org / 10.15560 / 10.4.822"]}

Neolissochilus soroides (Duncker 1904) Lissochilus tweediei: Herre & Myers, 1937: 61 (River Yum, a tributary of the River Plus). Neolissochilus soroides: Ahmad et al., 2014: 18 (Sungkai Wildlife Reserve); Ahmad & Zakaria-Ismail, 2014 (Sg. Cha Chor; Sg. Kejar; Sg. Ketir; Sg. Purun; Sg. Tiang); Shafiq et al., 2014: 825 (Sg. Ara; Sg. Kurau); Authors' data (Lata Papan; Lata Tebing Tinggi; Lata Ulu Chepor; Malim Nawar; Sg. Ara; Sg. Bikam; Sg. Jelai; Sg. Jelutong; Sg. Ijok; Sg. Temelong; Sg. Ulu Kenas; Sg. Bongkok). Remarks. We considered any specimen that resembles the morphological features of the Neolissochilus genus as Neolissochilus soroides because the latest literature indicates that congener N. hendersoni can only be found in neighbouring Penang, Kedah and Kelantan. It is not recorded in Perak so far (Khaironizam et al., 2015). Neolissochilus soroides closely resembles but differs from N. hendersoni by having slightly higher scale and gill rakers count (lateral scales 20-24 vs. 18-22; gill rakers 14-17 vs. 12-14). Moreover, there are three mouth forms in N. soroides to add to the confusion. To be conservative, we felt it is best to regard all specimens found by studies in Perak as N. soroides for the time being until more investigations are carried out., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 524, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Duncker, G. (1904) Die Fische der malayischen Halbinsel. Mitteilungen aus dem Naturhistorischen (Zoologischen) Museum in Hamburg, 21, 133 - 207.","Herre, A. W. C. T. & Myers, G. S. (1937) A contribution to the ichthyology of the Malay Peninsula. Bulletin of the Raffles Museum, 13, 5 - 75.","Ahmad, A. & Zakaria-Ismail, M. (2014) Additional native fish fauna of rivers & streams flowing into Temengor reservoir, Perak, Malaysia. Malayan Nature Journal, 664, 407 - 419.","Shafiq, Z. M., Shah, A. S. R. M., Zarul, H. H., Syaiful, M. M., Khaironizam, M. Z., Khaled, P. & Hamzah, Y. (2014) An annotated checklist of fish fauna of Bukit Merah Reservoir and its catchment area, Perak, Malaysia. Check List 10 (4), 822 - 828. https: // doi. org / 10.15560 / 10.4.822","Khaironizam, M. Z., Zakaria-Ismail, M. & Armbruster, J. W. (2015) Cyprinid fishes of the genus Neolissochilus in Peninsular Malaysia. Zootaxa, 3962 (1), 139 - 157."]}

Eugnathogobius siamensis (Fowler 1934) Eugnathogobius siamensis: Authors’ data (Pondok Tanjung; Sg. Kerian)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 533, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047

Oxygaster anomalura van Hasselt 1823 Oxygaster anomalura: Menon, 1954: 6 (Chenderoh; Kota Tampan); Shafiq et al., 2014: 825 (Bukit Merah reservoir; Sg. Jelai, Sg. Kurau); Authors' data (Bukit Merah reservoir)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 528, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Menon, A. G. K. (1954) Notes on Malayan fishes in the collection of the Raffles Museum, Singapore. Part 4. The cyprinid fishes. Bulletin of the Raffles Museum, 25, 5 - 26.","Shafiq, Z. M., Shah, A. S. R. M., Zarul, H. H., Syaiful, M. M., Khaironizam, M. Z., Khaled, P. & Hamzah, Y. (2014) An annotated checklist of fish fauna of Bukit Merah Reservoir and its catchment area, Perak, Malaysia. Check List 10 (4), 822 - 828. https: // doi. org / 10.15560 / 10.4.822"]}

Barbonymus schwanefeldii (Bleeker 1854) Barbonymus schwanefeldii: Ahmad & Zakaria-Ismail, 2014: 411 (Temenggor); Shafiq et al., 2014 (Bukit Merah reservoir; Sg. Merah; Sg. Jelai; Sg. Ara; Sg. Kurau; Sg. Jelutong); Authors' data (Bukit Merah; Chenderoh; Gerik; Sg. Ara; Sg. Kampar)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 522, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Ahmad, A. & Zakaria-Ismail, M. (2014) Additional native fish fauna of rivers & streams flowing into Temengor reservoir, Perak, Malaysia. Malayan Nature Journal, 664, 407 - 419.","Shafiq, Z. M., Shah, A. S. R. M., Zarul, H. H., Syaiful, M. M., Khaironizam, M. Z., Khaled, P. & Hamzah, Y. (2014) An annotated checklist of fish fauna of Bukit Merah Reservoir and its catchment area, Perak, Malaysia. Check List 10 (4), 822 - 828. https: // doi. org / 10.15560 / 10.4.822"]}

Chaca bankanensis Bleeker 1852 Chaca bankanensis: Authors' data (Pondok Tanjung)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 529, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047

Auriglobus modestus (Bleeker 1850) Auriglobus modestus: Authors' data (Teluk Intan)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 538, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047

Hemibagrus capitulum (Popta 1904) Macrones nemurus: Tweedie, 1934: 19 (Bukit Merah reservoir). Hemibagrus capitulum: Ng & Kottelat, 2013b: 235 (Bukit Merah; Chenderoh; Telok Intan; Sg. Perak at Kg. Kenderong); Ahmad et al., 2014: 20 (Sungkai Wildlife Reserve); Ahmad & Zakaria-Ismail, 2014: 414 (Sg. Cha Chor; Sg. Kejar; Sg. Ketir; Sg. Mes; Sg. Tiang); Shafiq et al., 2014: 826 (Bukit Merah reservoir; Sg. Jelutong; Sg. Merah); Authors' data (Bukit Merah reservoir; Sg. Bernam; Sg. Kampar; Sg. Ulu Kenas; Sg. Kuak; Temenggor).

Crossocheilus obscurus Tan & Kottelat, 2009 Crossocheilus obscurus: Ciccotto et al., 2017: 284 (Sg. Batang Padang)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 522, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Kottelat, M. & Tan, H. H. (2009) Osteochilus flavicauda, a new species of fish from the Malay Peninsula (Teleostei: Cyprinidae). Ichthyological Exploration of Freshwaters, 20 (1), 1 - 5.","Ciccotto, P. J., Pfeiffer, J. M. & Page, L. M. (2017) Revision of the Cyprinid Genus Crossocheilus (Tribe Labeonini) with Description of a New Species. Copeia, 105 (2), 269 - 292. https: // doi. org / 10.1643 / CI- 16 - 538"]}

Paedocypris sp. Paedocypris sp.: Authors��� data (Pondok Tanjung). Remarks. Following Kottelat et al. (2006), we confirm that the diminutive species encountered in 2000 by the third author and again in 2006 by the second author in Pondok Tanjung belongs to the genus Paedocypris (Fig. 4). Although Mayden & Chen (2010) and Fricke et al. (2018) have classified the genus Paedocypris as belonging to the Paedocyprididae family, we have placed it under the Cyprinidae family in our checklist following Britz et al. (2014) i.e. we assume there is an error in Fricke et al. (2018). Currently, literature review indicates that the enigmatic genus Paedocypris hosts three species with a maximum standard length of 10���12 mm, namely P. progenetica (from Jambi, Sumatra), P. micromegethes (from central Sarawak) and P. carbunculus (from Central Kalimantan) (Kottelat et al., 2006; Britz & Kottelat, 2008). Due to the presence of cartilaginous skeletal characters which characterizes the larval-like species, we could not further investigate the status of the specimens found in Perak as we lack the necessary high-resolution visual and scanning electron microscope (SEM) equipment at this point of time., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 524, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Kottelat, M., Britz, R., Tan, H. H. & Witte, K. E. (2006) Paedocypris, a new genus of Southeast Asian cyprinid fish with a remarkable sexual dimorphism, comprises the world's smallest vertebrate. Proceedings of the Royal Society London B, 273, 895 - 899. https: // doi. org / 10.1098 / rspb. 2005.3419","Mayden, R. L. & Chen, W. J. (2010) The world's smallest vertebrate species of the genus Paedocypris: a new family of freshwater fishes and the sister group to the world's most diverse clade of freshwater fishes (Teleostei: Cypriniformes). Molecular Phylogenetics and Evolution, 57, 152 - 175. https: // doi. org / 10.1016 / j. ympev. 2010.04.008","Fricke, R., Eschmeyer, W. N. & van der Laan, R. (eds) (2018) Catalogue of Fishes: Genera, Species, References. California Academy of Sciences. Available from http: // researcharchive. calacademy. org / research / ichthyology / catalog / fishcatmain. asp (Accessed 20 October 2018)","Britz, R. Conway, K. W. & Ruber, L. (2014) Miniatures, morphology and molecules: Paedocypris and its phylogenetic position (Teleostei, Cypriniformes). Zoological Journal of the Linnean Society, 172, 556 - 615. https: // doi. org / 10.1111 / zoj 12184","Britz, R., & Kottelat, M. (2008) Paedocypris carbunculus, a new species of miniature fish from Borneo (Teleostei: Cypriniformes: Cyprinidae). The Raffles Bulletin of Zoology, 56, 415 - 422."]}

Hampala macrolepidota Kuhl & van Hasselt 1823 Hampala macrolepidota: Tweedie, 1934: 20 (Bukit Merah reservoir); Shafiq et al., 2014: 825 (Sg. Ara; Sg. Jelutong; Sg. Kurau; Bukit Merah reservoir); Ahmad & Zakaria-Ismail, 2014 (Sg. Cha Chor; Sg. Kejar; Sg. Ketir; Sg. Mes; Sg. Purun; Sg. Tiang); Ahmad et al., 2014 (Sungkai Wildlife Reserve); Authors' data (Gerik; Pondok Tanjung; Sg. Kuak; Sg. Bongkok; Sg. Kampar; Sg. Ulu Kampar; Temenggor)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 523, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Tweedie, M. W. F. (1934) A list of fishes in the Collection of the Raffles Museum. Bulletin of the Raffles Museum, 9, 16 - 28.","Shafiq, Z. M., Shah, A. S. R. M., Zarul, H. H., Syaiful, M. M., Khaironizam, M. Z., Khaled, P. & Hamzah, Y. (2014) An annotated checklist of fish fauna of Bukit Merah Reservoir and its catchment area, Perak, Malaysia. Check List 10 (4), 822 - 828. https: // doi. org / 10.15560 / 10.4.822","Ahmad, A. & Zakaria-Ismail, M. (2014) Additional native fish fauna of rivers & streams flowing into Temengor reservoir, Perak, Malaysia. Malayan Nature Journal, 664, 407 - 419."]}

Batasio fluviatilis (Day 1888) Batasio tengana: Hora & Gupta, 1941: 23 (Chenderoh Lake)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 529, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Hora, S. L. & Gupta, J. C. (1941) Notes on Malayan fishes in the collection of the Raffles Museum, Singapore. I. Catfishes of the families Siluridae, Bagridae, Amblycepidae, Akysidae, Sisoridae, Chacidae, Schilbeidae and Clariidae. Bulletin of the Raffles Museum, 17, 12 - 43."]}

Lepidocephalichthys tomaculum Kottelat & Lim 1992 Lepidocephalichthys tomaculum: Authors��� data (Pondok Tanjung)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 520, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Kottelat, M. & Lim, K. K. P. (1992) A synopsis of the Malayan species of Lepidocephalichthys, with descriptions of two new species (Teleostei: Cobitidae). The Raffles Bulletin of Zoology, 40 (2), 201 - 220."]}

Notopterus notopterus (Pallas 1769) Notopterus notopterus: Shafiq et al., 2014: 825 (Sg. Kurau); Authors’ data (Bukit Merah reservoir; Malim Nawar)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 519, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Shafiq, Z. M., Shah, A. S. R. M., Zarul, H. H., Syaiful, M. M., Khaironizam, M. Z., Khaled, P. & Hamzah, Y. (2014) An annotated checklist of fish fauna of Bukit Merah Reservoir and its catchment area, Perak, Malaysia. Check List 10 (4), 822 - 828. https: // doi. org / 10.15560 / 10.4.822"]}

Acrochordonichthys rugosus (Bleeker 1846) Acrochordonichthys rugosus: Ng & Ng, 2001: 413 (Jalong, hill stream 1000–2000 ft)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 530, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Ng, H. H. & Ng, P. K. L. (2001) A revision of the akysid catfish genus Acrochordonichthys Bleeker. Journal of Fish Biology, 58 (2), 386 - 418. https: // doi. org / 10.1111 / j. 1095 - 8649.2001. tb 02260. x"]}

Channa melasoma (Bleeker 1851) Ophicephalus melanosoma: Herre & Myers, 1937: 71 (River Plus). Channa melasoma: Ahmad et al., 2014: 21 (Sungkai Wildlife Reserve); Authors' data (Pondok Tanjung)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 536, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Herre, A. W. C. T. & Myers, G. S. (1937) A contribution to the ichthyology of the Malay Peninsula. Bulletin of the Raffles Museum, 13, 5 - 75."]}

Pseudogobiopsis oligactis (Bleeker, 1875) Vaimosa perakensis: Herre, 1940b: 21 (Chenderoh; Sauk). Pseudogobiopsis oligactis: Ahmad & Zakaria-Ismail, 2014: 415 (Sg. Cha Chor; Sg. Kejar; Sg. Tiang); Authors' data (Temenggor)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 533, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Herre, A. W. C. T. (1940 b) New species of fishes from the Malay Peninsula and Borneo. Bulletin of the Raffles Museum, 16, 5 - 26.","Ahmad, A. & Zakaria-Ismail, M. (2014) Additional native fish fauna of rivers & streams flowing into Temengor reservoir, Perak, Malaysia. Malayan Nature Journal, 664, 407 - 419."]}

Wallago leerii Bleeker 1851 Wallago leerii: Tweedie, 1934: 18 (Telok Anson)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 531, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Tweedie, M. W. F. (1934) A list of fishes in the Collection of the Raffles Museum. Bulletin of the Raffles Museum, 9, 16 - 28."]}

Parachela oxygastroides (Bleeker 1852) Oxygaster johorensis: Menon, 1954: 7 (Bukit Merah reservoir). Remarks. The Parachela oxygastroides we are referring to here is the Oxygaster oxygastroides figured in Roberts (1989) and described by Kottelat et al. (1993). Parachela oxygastroides from Peninsular Malaysia may be P. siamensis and this is comprehesively discussed in Kottelat (1995). We retain P. oxygastroides in this paper until the taxon is clarified by the authorities., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 528, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Menon, A. G. K. (1954) Notes on Malayan fishes in the collection of the Raffles Museum, Singapore. Part 4. The cyprinid fishes. Bulletin of the Raffles Museum, 25, 5 - 26.","Roberts, T. R. (1989) The freshwater fishes of western Borneo (Kalimantan Barat, Indonesia). Memoirs of the California Academy of Sciences, 14, 1 - 210."]}

Dermogenys collettei Meisner 2001 Dermogenys collettei: Authors' data (Sg. Kerian)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 537, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047

Barbonymus gonionotus (Bleeker 1849) Barbonymus gonionotus: Shafiq et al., 2014 (Bukit Merah reservoir; Sg. Ara; Sg. Kurau); Authors' data (Malim Nawar; Sg. Kampar) Remarks. Introduced species., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 522, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Shafiq, Z. M., Shah, A. S. R. M., Zarul, H. H., Syaiful, M. M., Khaironizam, M. Z., Khaled, P. & Hamzah, Y. (2014) An annotated checklist of fish fauna of Bukit Merah Reservoir and its catchment area, Perak, Malaysia. Check List 10 (4), 822 - 828. https: // doi. org / 10.15560 / 10.4.822"]}

Brevibora dorsiocellata (Duncker 1904) Brevibora dorsiocellata: Authors’ data (Bukit Merah reservoir; Pondok Tanjung)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 526, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Duncker, G. (1904) Die Fische der malayischen Halbinsel. Mitteilungen aus dem Naturhistorischen (Zoologischen) Museum in Hamburg, 21, 133 - 207."]}

Probarbus jullieni Sauvage 1880 Probarbus jullieni: Herre, 1940a: 30 (Chenderoh)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 525, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Herre, A. W. C. T. (1940 a) Additions to the fish fauna of Malaya and notes on rare or little known Malayan and Bornean fishes. Bulletin of the Raffles Museum, 16, 27 - 61."]}

Poropuntius normani Smith 1931 Lissocheilus smedleyi: Herre & Myers, 1937: 61 (River Yum, a tributary of River Plus). Poropuntius smedleyi: Ahmad et al., 2014: 17 (Sungkai Wildlife Reserve); Ahmad & Zakaria-Ismail, 2014: 413 (Sg. Cha Chor; Sg. Kejar; Sg. Ketir; Sg. Mes; Sg. Purun; Sg. Tiang). Poropuntius normani: Authors' data (Sg. Ulu Kampar)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 525, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Herre, A. W. C. T. & Myers, G. S. (1937) A contribution to the ichthyology of the Malay Peninsula. Bulletin of the Raffles Museum, 13, 5 - 75.","Ahmad, A. & Zakaria-Ismail, M. (2014) Additional native fish fauna of rivers & streams flowing into Temengor reservoir, Perak, Malaysia. Malayan Nature Journal, 664, 407 - 419."]}

Rasbora bankanensis (Bleeker 1853) Rasbora bankanensis: Ahmad et al., 2014: 18 (Sungkai Wildlife Reserve); Authors' data (Pondok Tanjung)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 526, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047

Amblyceps foratum Ng & Kottelat 2000 Amblyceps foratum: Ahmad & Zakaria-Ismail, 2014: 414 (Sg. Cha Chor; Sg. Kejar; Sg. Ketir; Sg. Mes; Sg. Purun; Sg. Tiang); Authors��� data (Sg. Kuak; Sg. Temelong; Sg. Ulu Kenas)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 530, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Ng, H. H. & Tan, H. H. (2000) A new species of Encheloclarias from Sumatra. Journal of Fish Biology, 57 (2), 536 - 540. https: // doi. org / 10.1111 / j. 1095 - 8649.2000. tb 02193. x","Ahmad, A. & Zakaria-Ismail, M. (2014) Additional native fish fauna of rivers & streams flowing into Temengor reservoir, Perak, Malaysia. Malayan Nature Journal, 664, 407 - 419."]}

Helostoma temminckii Cuvier 1829 Helostoma temminckii: Shafiq et al., 2014: 827 (Bukit Merah reservoir); Authors' data (Air Kuning; Malim Nawar; Pondok Tanjong; Sg. Beriah)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 534, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Shafiq, Z. M., Shah, A. S. R. M., Zarul, H. H., Syaiful, M. M., Khaironizam, M. Z., Khaled, P. & Hamzah, Y. (2014) An annotated checklist of fish fauna of Bukit Merah Reservoir and its catchment area, Perak, Malaysia. Check List 10 (4), 822 - 828. https: // doi. org / 10.15560 / 10.4.822"]}

Trigonopoma gracile (Kottelat 1991) Trigonopoma gracile: Authors' data (Pondok Tanjung), Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 527, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Kottelat, M. (1991) Notes on the taxonomy of some Sundaic and Indochinese species of Rasbora, with description of four new species (Pisces: Cyprinidae). Ichthyological Exploration of Freshwaters, 2, 177 - 191."]}

Trichopsis vittata (Cuvier 1831) Trichopsis vittata: Authors' data (Malim Nawar; Pondok Tanjung; Sg. Beriah)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 535, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047

Scleropages formosus (Müller & Schlegel 1840) Scleropages formosus: Smedley, 1931: 67 (Bukit Merah); Tweedie, 1934: 17 (Bukit Merah)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 519, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Smedley, N. (1931) An osteoglossis fish in the Malay Peninsula. Bulletin of the Raffles Museum, 5, 67. Available from: https: // lkcnhm. nus. edu. sg / app / uploads / 2017 / 06 / 05 brm 067 - 068. pdf (27 June 2018)","Tweedie, M. W. F. (1934) A list of fishes in the Collection of the Raffles Museum. Bulletin of the Raffles Museum, 9, 16 - 28."]}

Sphaerichthys osphromenoides Canestrini 1860 Sphaerichthys osphromenoides: Authors' data (Pondok Tanjung; Kg. Selabak)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 535, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047

Channa micropeltes (Cuvier 1831) Ophicephalus micropeltes: Herre & Myers, 1937: 71 (Chandra Dam). Channa micropeltes: Ahmad & Zakaria-Ismail, 2014: 415 (Temenggor); Shafiq et al., 2014: 827 (Bukit Merah reservoir); Authors' data (Bukit Merah reservoir; Malim Nawar; Sg. Beriah; Temenggor)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 536, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Herre, A. W. C. T. & Myers, G. S. (1937) A contribution to the ichthyology of the Malay Peninsula. Bulletin of the Raffles Museum, 13, 5 - 75.","Ahmad, A. & Zakaria-Ismail, M. (2014) Additional native fish fauna of rivers & streams flowing into Temengor reservoir, Perak, Malaysia. Malayan Nature Journal, 664, 407 - 419.","Shafiq, Z. M., Shah, A. S. R. M., Zarul, H. H., Syaiful, M. M., Khaironizam, M. Z., Khaled, P. & Hamzah, Y. (2014) An annotated checklist of fish fauna of Bukit Merah Reservoir and its catchment area, Perak, Malaysia. Check List 10 (4), 822 - 828. https: // doi. org / 10.15560 / 10.4.822"]}

Glyptothorax fuscus Fowler 1934 Glyptothorax majus: Hora & Gupta, 1941: 34 (Jalong). Glyptothorax major: Ahmad et al., 2014: 19 (Sungkai Wildlife Reserve). Glyptothorax callopterus: Ahmad & Zakaria-Ismail, 2014: 414 (Sg. Cha Chor; Sg. Kejar; Sg. Ketir; Sg. Mes; Sg. Tiang). Glyptothorax fuscus: Ng & Kottelat, 2016: 25 (Batang Padang; Sg. Korbu at Jalong; Tapah); Authors' data (Pondok Tanjung; Sg. Bernam; Sg. Bongkok; Sg. Ijok; Sg. Kuak; Sg. Ulu Kenas)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 530, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Hora, S. L. & Gupta, J. C. (1941) Notes on Malayan fishes in the collection of the Raffles Museum, Singapore. I. Catfishes of the families Siluridae, Bagridae, Amblycepidae, Akysidae, Sisoridae, Chacidae, Schilbeidae and Clariidae. Bulletin of the Raffles Museum, 17, 12 - 43.","Ahmad, A. & Zakaria-Ismail, M. (2014) Additional native fish fauna of rivers & streams flowing into Temengor reservoir, Perak, Malaysia. Malayan Nature Journal, 664, 407 - 419.","Ng, H. H. & Kottelat, M. (2016) The Glyptothorax of Sundaland: A revisionary study (Teleostei: Sisoridae). Zootaxa, 4188 (1), 1 - 92. https: // doi. org / 10.11646 / zootaxa. 4188.1.1"]}

Danio tweediei Brittan 1956 Brachydanio albolineata: Herre, 1940a: 29 (Sauk); Menon, 1954: 7 (Sauk). Danio tweediei: Author’s data (Lata Papan; Lenggong; Sg. Ulu Kampar). Remarks. Although Kottelat (2013) treats Nuria albolineata and Danio tweediei as the junior synonyms of Brachydanio albolineata (Blyth, 1860), Fricke et al. (2018) accepted D. tweediei as the valid name by providing Kullander & Britz (2015) as reference. When the paper was examined, surprisingly, both D. albolineatus and D. tweediei are treated as valid species for unknown reasons. Since we follow Fricke et al. (2018) as the master reference, only D. tweediei is listed herein., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 526, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Herre, A. W. C. T. (1940 a) Additions to the fish fauna of Malaya and notes on rare or little known Malayan and Bornean fishes. Bulletin of the Raffles Museum, 16, 27 - 61.","Menon, A. G. K. (1954) Notes on Malayan fishes in the collection of the Raffles Museum, Singapore. Part 4. The cyprinid fishes. Bulletin of the Raffles Museum, 25, 5 - 26.","Kottelat, M. (2013) The fishes of the inland waters of Southeast Asia: A catalogue and core bibliography of the fishes known to occur in freshwaters, mangroves and estuaries. The Raffles Bulletin of Zoology, 27, 1 - 663.","Fricke, R., Eschmeyer, W. N. & van der Laan, R. (eds) (2018) Catalogue of Fishes: Genera, Species, References. California Academy of Sciences. Available from http: // researcharchive. calacademy. org / research / ichthyology / catalog / fishcatmain. asp (Accessed 20 October 2018)","Kullander, S. O. & Britz, R. (2015) Description of Danio absconditus, new species, and redescription of Danio feegradei (Teleostei: Cyprinidae), from the Rakhine Yoma hotspot in south-western Myanmar. Zootaxa, 3948 (2), 233 - 247."]}

Malayochela maassi (Weber & de Beaufort 1912) Malayochela maassi: Authors’ data (Pondok Tanjung)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 526, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047

Homaloptera parclitella Tan & Ng 2005 Homaloptera parclitella: Tan & Ng 2005a: 8 (Sg. Korbu at Kampung Jalong); Ahmad et al., 2014: 18 (Sungkai Wildlife Reserve); Authors’ data (Sg. Ulu Kenas).

Labeo rohita (Hamilton 1822) Labeo rohita: Authors’ data (Malim Nawar; Sg. Kampar). Remarks. Introduced species., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 523, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047

Pao leiurus (Bleeker 1850) Monotrete leiurus: Ahmad & Zakaria-Ismail, 2014: 416 (Sg. Cha Chor; Sg. Kejar; Sg. Ketir)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 538, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Ahmad, A. & Zakaria-Ismail, M. (2014) Additional native fish fauna of rivers & streams flowing into Temengor reservoir, Perak, Malaysia. Malayan Nature Journal, 664, 407 - 419."]}

Rasbora kalochroma (Bleeker 1851) Rasbora kalochroma: Authors’ data (Pondok Tanjung)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 527, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047

Clarias aff. batrachus (Linnaeus 1758) Clarias batrachus: Ahmad et al., 2014: 20 (Sungkai Wildlife Reserve); Shafiq et al., 2014: 826 (Sg. Ara). Clarias aff. batrachus: Authors' data (Air Kuning; Pondok Tanjung; Sg. Ijok; Sg. Ulu Kampar) Remarks. Clarias aff. batrachus remains imprecise as the literature has so far propose that there may be four valid species of Indian, Indochinese, Javan or Sundaland origins. Currently, the authorities have classified specimens from Borneo and the Malay Peninsula to be C. aff. batrachus "Sundaland" until the taxon is further investigated (Ng & Kottelat, 2008; Lee & Sulaiman, 2015)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on pages 531-532, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Shafiq, Z. M., Shah, A. S. R. M., Zarul, H. H., Syaiful, M. M., Khaironizam, M. Z., Khaled, P. & Hamzah, Y. (2014) An annotated checklist of fish fauna of Bukit Merah Reservoir and its catchment area, Perak, Malaysia. Check List 10 (4), 822 - 828. https: // doi. org / 10.15560 / 10.4.822","Ng, H. H. & Kottelat, M. (2008) The identity of Clarias batrachus (Linnaeus, 1758), with the designation of a neotype (Teleostei: Clariidae). Zoological Journal of the Linnean Society, 153, 725 - 732. https: // doi. org / 10.1111 / j. 1096 - 3642.2008.00391. x","Lee, P. & Sulaiman, Z. (2015) Genetic identification and structure of Clarias batrachus (Linnaeus, 1758) from Southeast Asia using a mitochondrial DNA marker. Zootaxa, 3962 (1), 182 - 190."]}

Cyclocheilichthys repasson (Bleeker 1853) Cyclocheilichthys repasson: Herre, 1940a: 20 (Sauk); Authors’ data (Sg. Perak at Kuala Kangsar)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 523, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Herre, A. W. C. T. (1940 a) Additions to the fish fauna of Malaya and notes on rare or little known Malayan and Bornean fishes. Bulletin of the Raffles Museum, 16, 27 - 61."]}

Homalopteroides smithi (Hora 1932) Homalopteroides smithi: Authors’ data (Sg. Bernam; Sg. Temelong; Sg. Ulu Kampar; Sg. Ulu Kenas)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 520, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047

Aplocheilus armatus (van Hasselt 1823) Aplocheilus armatus: Authors’ data (Bukit Merah reservoir; Malim Nawar; Pondok Tanjung; Sg. Beriah, Sg. Kampar; Sg. Kerian)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 537, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047

Cyclocheilichthys armatus (Valenciennes 1842) Cyclocheilichthys armatus: Herre & Myers, 1937: 61 (Chandra dam; Kuala Kurau); Authors’ data (Pondok Tanjung)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 523, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Herre, A. W. C. T. & Myers, G. S. (1937) A contribution to the ichthyology of the Malay Peninsula. Bulletin of the Raffles Museum, 13, 5 - 75."]}

Aperioptus pictorius Richardson 1848 Aperioptus pictorius: Authors' data (Pondok Tanjung)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 519, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047

Hemibagrus capitulum (Popta 1904) Macrones nemurus: Tweedie, 1934: 19 (Bukit Merah reservoir). Hemibagrus capitulum: Ng & Kottelat, 2013b: 235 (Bukit Merah; Chenderoh; Telok Intan; Sg. Perak at Kg. Kenderong); Ahmad et al., 2014: 20 (Sungkai Wildlife Reserve); Ahmad & Zakaria-Ismail, 2014: 414 (Sg. Cha Chor; Sg. Kejar; Sg. Ketir; Sg. Mes; Sg. Tiang); Shafiq et al., 2014: 826 (Bukit Merah reservoir; Sg. Jelutong; Sg. Merah); Authors' data (Bukit Merah reservoir; Sg. Bernam; Sg. Kampar; Sg. Ulu Kenas; Sg. Kuak; Temenggor)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 529, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047, {"references":["Tweedie, M. W. F. (1934) A list of fishes in the Collection of the Raffles Museum. Bulletin of the Raffles Museum, 9, 16 - 28.","Ng, H. H. & Kottelat, M. (2013 b) Revision of the Asian Catfish Genus Hemibagrus Bleeker, 1862 (Teleostei: Siluriformes: Bagridae). The Raffles Bulletin of Zoology, 61 (1), 205 - 291.","Ahmad, A. & Zakaria-Ismail, M. (2014) Additional native fish fauna of rivers & streams flowing into Temengor reservoir, Perak, Malaysia. Malayan Nature Journal, 664, 407 - 419.","Shafiq, Z. M., Shah, A. S. R. M., Zarul, H. H., Syaiful, M. M., Khaironizam, M. Z., Khaled, P. & Hamzah, Y. (2014) An annotated checklist of fish fauna of Bukit Merah Reservoir and its catchment area, Perak, Malaysia. Check List 10 (4), 822 - 828. https: // doi. org / 10.15560 / 10.4.822"]}

Osteochilus scapularis Fowler 1939 Osteochilus scapularis: Authors��� data (Sg. Ulu Kenas)., Published as part of Ng, Casey Keat Chuan, Lim, Teow Yeong, Ahmad, Amirrudin & Khaironizam, Md Zain, 2019, Provisional checklist of freshwater fish diversity and distribution in Perak, Malaysia, and some latest taxonomic concerns, pp. 515-545 in Zootaxa 4567 (3) on page 524, DOI: 10.11646/zootaxa.4567.3.5, http://zenodo.org/record/2599047