Ichthyopathological study of pre-spawning chum salmon that died at the mouth of the Vostochnaya river (the basin of Tunaicha Lake, Sakhalin Island) in September 2019
The results of ichthyopathological study of several specimens of prespawning chum salmon caught in the mouth of Vostochnaya river (the basin of Tunaicha lake) are presented. The specimens were caught during the period of mass death of fish in the coastal areas adjacent to the mouth. In the absence of external signs of diseases and pathology on the part of internal organs, contamination of the kidneys in fish with bacteria of the family Vibrionaceae was detected.