As the question ? There is one species in Heilongjiang, China. The other one is in Europe Scientific name

Sturgeon family Acipenseridae ? Huso ? Fish

In some countries it is called the "ironclad shark". The seemingly gentle sturgeon can be particularly vicious at times, gulping down small fish. The koala is a large carnivorous fish that can live for more than 50 years and is now found only in the Heilongjiang River, the border river between China and Russia.

Distributed in the former Soviet Union, as well as the middle reaches of the Heilongjiang River, the Ussuri River, the Songhua River, and the lower reaches of the Nenjiang River, it inhabits freshwater and gravelly and sandy water bottoms. The type locality of this species is in the Heilongjiang, Erguna, Shilkahai, and Ennen rivers.