Paracottus knerii

Paracottus knerii, the stone sculpin, is a species of cottoid fish endemic to Russia, where it is found in Lake Baikal and surrounding tributaries as well as the Gramninskie Lakes, Lake Verkhnaya Agata and the Enisei River and various lakes in Tuva. It is a nearshore fish that breeds in waters less than 1.5 m depth, but at other seasons may migrate down to 30 m. It spawns under stones and the male guards the eggs. Maximum length of the stone sculpin would be 14.4 centimetres (5.7 in) TL. This species is the only recognized member of its genus.