noun
loach goby
A species of goby (Rhyacichthys aspro) found in fast-flowing streams. The name is usually written in katakana.
ツバサハゼは渓流に生息する小型のハゼです。
The loach goby is a small goby that lives in mountain streams.
The name likely derives from 翼 (つばさ, 'wing') and ハゼ (haze, 'goby'), referring to the wing-like pectoral fins. The exact origin is uncertain.