Fin's Fish Guide
The Royal threadfin (Pentanemus quinquarius) is a saltwater fish of the family Polynemidae that grows up to 35 cm.
Eastern Atlantic along the coast of West Africa, over sandy and silty bottoms of turbid coastal water and estuaries; tolerates brackish water.
Description
The royal threadfin is a silvery bottom fish of the family Polynemidae (threadfins) reaching about 35 cm. Characteristic of the family is the blunt snout with an inferior mouth, and a row of separate, thread-like lower pectoral-fin rays — five in this species — that feel over the muddy bottom for prey like sensitive feelers. The species lives in schools over sand and mud bottoms of turbid coastal water and estuaries along the West African coast and tolerates brackish water. With its feeler rays it detects shrimps, small crustaceans, worms and small fish. The threadfin is a valued commercial fish in West Africa landed by coastal fisheries.
Frequently asked questions
How do you recognise the Royal threadfin?
The Royal threadfin has a torpedo-shaped body, is mainly silver-grey and shows a plain pattern. Silvery bottom fish with a blunt snout and five separate, thread-like lower pectoral fin rays that feel over the bottom as a sensory organ.
Where does the Royal threadfin live?
The Royal threadfin lives in the sea (marine waters) and is mostly found around sand or mud bottom. Eastern Atlantic along the coast of West Africa, over sandy and silty bottoms of turbid coastal water and estuaries; tolerates brackish water.
How big does the Royal threadfin get?
The Royal threadfin grows to a maximum of about 35 cm. On average the species is around 25 cm.
Is the Royal threadfin dangerous to humans?
No, the Royal threadfin is harmless to humans. None required: this species is harmless to humans.
Is the Royal threadfin edible?
Yes, the Royal threadfin is a highly prized food fish.
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More from the family Polynemidae
Want the complete picture on the Royal threadfin?
Point your camera at the fish and Fin names the species in seconds. Free, and the Royal threadfin is one of 12,519 species in the app.