Herzenstein's rough sculpin (Asprocottus herzensteini) is a species of ray-finned fish belonging to the family Cottidae, the typical sculpins. It is endemic to Lake Baikal in Russia. It was described by Lev Berg in 1906.Berg, L. S., 1906 (27 Nov.) Übersicht der Cataphracti (Fam. Cottidae, Cottocomephoridae und Comephoridae) des Baikalsees. Zoologischer Anzeiger v. 30 (no. 26): 906–911. It dwells at a depth range of 22–887 metres, and is abundantly found below 60 m. Males can reach a maximum total length of 11.5 centimetres.
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