Neocottus werestschagini is a species of ray-finned fish belonging to the family Cottidae, the typical sculpins. It was described by Dmitrii Nikolaevich Taliev in 1935, originally under the genus Abyssocottus.Taliev, D. N., 1935 [ref. 15741] Neue Formen der Cataphracti aus dem Baikalsee. Trudy Baikal'skoi limnologischeskoi stantsii = Travaux de la Station limnologique du Lac Baikal v. 6: 59-68. It is a rare freshwater, deep water-dwelling fish endemic to Lake Baikal, Russia. It dwells at a depth range of , and inhabits silty sand sediments. Males can reach a maximum total length of .
The diet of N. werestschagini consists of bony fish, gammarids, and debris.
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