The Sakhalin sculpin (''Cottus amblystomopsis'') is a species of

amphidromous Fish migration is mass relocation by fish from one area or body of water to another. Many types of fish migrate on a regular basis, on time scales ranging from daily to annually or longer, and over distances ranging from a few metres to thousan ...

ray-finned fish belonging to the family Cottidae, the typical sculpins. It is found in eastern Russia to northern

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

. It reaches a maximum length of 20.8 cm. The Sakhalin sculpin was first formally described in 1904 by the Russian zoologist

Peter Yulievich Schmidt Peter Yulievich Schmidt (born 23 December 1872, St. Petersburg, died 25 November 1949, Leningrad) was a Russian and Soviet zoologist, ichthyologist and museum curator. Peter Yulievich Schmidt attended the gymnasium of KI May before studying at ...

with its

type locality Type locality may refer to: * Type locality (biology) * Type locality (geology) See also * Local (disambiguation) * Locality (disambiguation) {{disambiguation ...

given as the Lyutoga River on Sakhalin. This species is sometimes placed in the subgenus ''Cephalocottus''. The

specific name Specific name may refer to: * in Database management systems, a system-assigned name that is unique within a particular database In taxonomy, either of these two meanings, each with its own set of rules: * Specific name (botany), the two-part (bino ...

is a misspelling of '' Ambystoma'', the axolotl (''Ambystoma mexicanus'') combined with ''opsis'', meanning "having the look of", and Schmidt described it as having a head that is “strongly dorsoventrally depressed, wide, nearly flat dorsally, abruptly sloping laterally, similar to the head of an axolotl” (translation).

References

Fish of Russia Cottus (fish) Fish described in 1904 {{Scorpaeniformes-stub