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Atlantic threadfin (Polydactylus octonemus) — Polynemidae

Atlantic threadfin

Polydactylus octonemus
Family: Polynemidae
LC · Least Concern

The Atlantic threadfin (Polydactylus octonemus) is a saltwater fish of the family Polynemidae that grows up to 33 cm.

Length
33 cm
Water
Saltwater
Depth
5.0–66.0 m
Diet
Carnivore
Behaviour
Schooling
Body shape
Torpedo-shaped
Substrate
Sand / mud bottom
Danger
Harmless
Edibility
Commonly eaten

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.

Where does the Atlantic threadfin live?

The Atlantic threadfin lives in the sea (marine waters) and is mostly found around sand or mud bottom.

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.

Is the Atlantic threadfin edible?

Yes, the Atlantic threadfin is commonly eaten.

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All data

Identification

Dutch name
Atlantische koningsvis sourced
English name
Atlantic threadfin verified
Scientific name
Polydactylus octonemus
Family
Polynemidae
Other names
Atlantic threadfin verified

Appearance

Size class
Medium verified
Max length (cm)
33.0 verified
Average length (cm)
25.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Silver / grey inferred
Pattern
Plain inferred
Tail shape
Forked inferred
Mouth position
Inferior (downward) inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal fins
Two separate inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Sand / mud bottom sourced
Min depth (m)
5.0 verified
Max depth (m)
66.0 verified
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Social behaviour
Schooling inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred

For anglers

Edibility
Commonly eaten sourced
Fishing method
Bodemvissen met natuurlijk aas (worm, garnaal of vis) op of vlak boven de bodem. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Polydactylus

More from the family Polynemidae

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