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The article focuses on the clearhead icefish, Protosalanx hyalocranius, new non-native species that established a population in the Amur River, China. Topics discussed include the reproductive strategy, value, and sexual characteristics of the clearhead icefish. Also mentioned are the spawning ground, length and weight distribution, and maturation stage of this species.

This paper reports the growth pattern and length-weight relationship and summarizes biological data for the clearhead icefish ( Protosalanx hyalocranius) in Lake Khanka (Xingkai), on the border between China and Russia. The von Bertalanffy growth was estimated as SL = 20.3(1 − e−2.93 ( t − 0.21)). The length-weight relationship was W = 0.00448 SL2.99 for juveniles, and W = 0.000896 SL3.59 for adults. P. hyalocranius mature in December and spawn in January, when the lake is still covered with ice, then die after spawning. The larvae hatch in March. Juveniles feed mainly on zooplankton whereas adults also feed on other fishes. [ABSTRACT FROM AUTHOR]

The article presents a study on the occurrence of the clearhead icefish, Protosalanx hyaloranius in the Songhua River, the largest tributary of Amur River. The specimen was 67.81 mm standard length. Other meristic characteristics were also obtained. The sex of the fish could not be identified at this stage of life.

Summary This paper reports the length-weight relationships of 16 fish species belonging to three families and ten genera from the Tarim River in China. Length-weight relationships for ten fish species were unknown to Fishbase, and new maximum lengths are given for six species. The r2 values ranged from 0.972 to 0.995. Values of b varied from 2.79 to 3.49. [ABSTRACT FROM AUTHOR]