Neocottus thermalis

Neocottus thermalis is a species of ray-finned fish belonging to the family Cottidae, the typical sculpins. It was described by Valentina Grigorievna Sideleva in 2002. It is a freshwater, deep water-dwelling fish which is endemic to Lake Baikal, in Russia. It is known to dwell at a depth range of 430 to 480 m.

The IUCN classifies this species as Critically Endangered because it is known only from the vicinity of Frolikha Bay in northern Lake Baikal, a very restricted range, and is threatened by pollution, water extraction and waste-water treatment.