Characteristics of the ecological danger of illegal poaching fish catches in the lower reaches of the Irtysh river

Poaching of aquatic biological resources is one the most common environmental crimes, causing direct and indirect harm to entire amount fish stocks. It necessary have a clear understanding composition quality poacher’s catches in order properly manage This paper examines poaching lower reaches Irtysh River, based on data forensic ichthyologic examinations over past 9 years. The study showed that basis Siberian sturgeon, sterlet, ide, carpbream, nelma, burbot, less demand, gibel carp, crucian roach, zander, perch, pike. Poachers harvest nelma pike all sizes, not giving preference only large or small ones. From 2013 2019, sturgeons dominated catches, but since 2020, share cyprinids has increased significantly. An analysis fatness poacher shows poachers try seize healthy well-fed representatives species, except for which harvested regardless condition.