Fin's Fish Guide
The Atlantic threadfin (Polydactylus octonemus) is a saltwater fish of the family Polynemidae that grows up to 33 cm.
Western Atlantic; sandy and muddy bottoms and beaches of coastal waters.
Description
The Atlantic threadfin is a threadfin of the family Polynemidae from the western Atlantic. The species grows to about 33 cm and has a streamlined, silvery body and, characteristic of threadfins, a number of free, thread-like lower pectoral rays that hang forward separate from the fin. With these sensitive 'feelers' it probes turbid sand and mud bottoms and beaches for hidden prey. As a bottom searcher it feeds on shrimps, small fishes and worms. The Atlantic threadfin forms schools and is a local food and bait fish. It is harmless to humans.
Frequently asked questions
How do you recognise the Atlantic threadfin?
The Atlantic threadfin has a torpedo-shaped body, is mainly silver-grey and shows a plain pattern. Free, filamentous lower pectoral fin rays acting as 'feelers' to probe turbid bottoms.
Where does the Atlantic threadfin live?
The Atlantic threadfin lives in the sea (marine waters) and is mostly found around sand or mud bottom. Western Atlantic; sandy and muddy bottoms and beaches of coastal waters.
How big does the Atlantic threadfin get?
The Atlantic threadfin grows to a maximum of about 33 cm. On average the species is around 25 cm.
Is the Atlantic threadfin dangerous to humans?
No, the Atlantic threadfin is harmless to humans. None required: this species is harmless to humans.
Is the Atlantic threadfin edible?
Yes, the Atlantic threadfin is commonly eaten.
More photos
Want the complete picture on the Atlantic threadfin?
Point your camera at the fish and Fin names the species in seconds. Free, and the Atlantic threadfin is one of 12,519 species in the app.
All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Polydactylus
More from the family Polynemidae
Want the complete picture on the Atlantic threadfin?
Point your camera at the fish and Fin names the species in seconds. Free, and the Atlantic threadfin is one of 12,519 species in the app.