For the first time since the 1930s, the fish fauna has been studied in the Kara River, its tributary (Silova-Yakha River), and three foothill lakes in their catchment area. The updated list of ichthyofauna includes 18 species, eleven of which belong to the family Salmonidae, in particular, the Arctic char Salvelinus alpinus, pink salmon Oncorhynchus gorbuscha (accidental invader), Atlantic salmon Salmo salar, a number of whitefish species (Coregoninae), and some others. Nine species of Pisces and Agnatha, previously not recorded directly in this watercourse, but included by some authors in the list of ichthyofauna of the Kara River basin, were not identified during the research. Siberian grayling Thymallus arcticus dominates in the fish communities in the upper reaches and foothill sections of the watercourse, the European grayling T. thymallus, in most of the middle and lower reaches. The role of whitefish species increases as one approaches the lower reaches of the river system. In the studied lakes, the most numerous are the Siberian grayling and the peled Coregonus peled. Valuable and commercial fish species are subject to intensive year-round fishing along the entire river. Therefore, the conservation of any species requires the development and implementation of technologically advanced measures going beyond the establishment of under-resourced protected areas and taking into account the traditional lifestyle of reindeer herders.
V. I. Ponomarev (Sun,) studied this question.