threadfin; striped threadfin
Refers to fish of the family Polynemidae, especially Polydactylus plebeius. A technical term used in biology and fishing contexts.
ツバメコノシロは熱帯の海に生息する。
Threadfins inhabit tropical seas.
市場で珍しいツバメコノシロを見つけた。
I found a rare threadfin at the market.
Compound of ツバメ (swallow, the bird) and コノシロ (dotted gizzard shad, Konosirus punctatus), likely from a perceived resemblance. The exact origin is uncertain.