Cottus Kolymensis (Cottus kolymensis), first described by Sideleva & Goto, 2012 is a small fish in the family Cottidae (order Perciformes). Adults typically reach 9.90 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Temperate waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. On the IUCN Red List, it is classified as Least Concern.
Anal soft rays: 12 - 14; Vertebrae: 33 - 34. Distinguished by having the following characters: length of internal ray of ventral fin very short, 15-30% of the long ray length; interorbital space wide and equal or slightly smaller than longitudinal eye diameter; palatine bones with teeth; fifth pore (pm5) of preoperculo-mandibular canal is usually paired; incomplete lateral canal with two to three autonomous segments at the end, with total number of pores from 13 + 2 + 2 + 2 to 23 + 2 + 2 .
Behavioural data for Cottus Kolymensis is currently being reviewed.
Freshwater; benthopelagic. Temperate
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