First report of the emerging rosette agent (Sphaerothecum destruens) in a captive held native north American cyprinid, the warpaint shiner (Luxilus coccogenis, Cope).

This article presents the first recorded instance of Sphaerothecum destruens infection in a native North American fish species, the warpaint shiner. S. destruens is a pathogen that has been linked to disease in salmonids in North America and has spread to European cyprinids through the introduction of the invasive topmouth gudgeon. The parasite can have significant impacts, causing deaths in salmonids and leading to population declines in susceptible wild fish species. The article provides details on the microscopic characteristics of the infection in the warpaint shiner and raises concerns about the health of native cyprinid populations in North America. Further research is needed to understand the distribution and host range of S. destruens in freshwater fish in North America. [Extracted from the article]