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Fringed flounder (Etropus crossotus) — Paralichthyidae

Fringed flounder

Etropus crossotus
LC · Least Concern

The Fringed flounder (Etropus crossotus) is a fish that lives in both fresh and salt water of the family Paralichthyidae that grows up to 21 cm.

Length
21.3 cm
Water
Euryhaline
Depth
0.0–100.0 m
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Flatfish
Substrate
Sand / mud bottom
Danger
Harmless
Edibility
Rarely eaten

Description

The fringed flounder is a small flatfish of the family Paralichthyidae (sand flounders) reaching about 21 cm. Both eyes lie on the left side of the head; the species takes its name from a fringed edge on the jaw of the blind (under) side. The brown upper side gives good camouflage on sand and mud bottoms, where the fish lies half-buried watching for prey. It lives over soft bottoms of coastal water and estuaries along the western Atlantic coast from the USA to Brazil and tolerates brackish water. On the bottom it ambushes small crustaceans, worms and molluscs. Because of its small size it has little commercial value and is mostly landed as bycatch.

Frequently asked questions

How do you recognise the Fringed flounder?

The Fringed flounder has a flatfish-shaped body, is mainly brown and shows a plain pattern.

Where does the Fringed flounder live?

The Fringed flounder lives in both fresh and salt water and is mostly found around sand or mud bottom.

How big does the Fringed flounder get?

The Fringed flounder grows to a maximum of about 21 cm. On average the species is around 15 cm.

Is the Fringed flounder dangerous to humans?

No, the Fringed flounder is harmless to humans.

Is the Fringed flounder edible?

The Fringed flounder is rarely eaten.

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All data

Identification

Dutch name
Franjekaak-bot inferred
English name
Fringed flounder verified
Scientific name
Etropus crossotus
Family
Paralichthyidae
Other names
Fringed flounder verified

Appearance

Size class
Medium verified
Max length (cm)
21.3 verified
Average length (cm)
15.0 verified
Body shape
Flatfish verified
Dominant colour
Brown sourced
Pattern
Plain sourced
Tail shape
Rounded inferred
Mouth position
Terminal inferred
Lips
Thick / fleshy inferred
Barbels
No verified
Dorsal fins
One continuous sourced
Dorsal spines
No verified

Habitat & distribution

Water type
Euryhaline verified
Substrate
Sand / mud bottom verified
Min depth (m)
0.0 verified
Max depth (m)
100.0 verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore verified
Social behaviour
Solitary verified
Territorial
No verified
Activity
Nocturnal inferred
Reproduction
Separate sexes verified
Sexual dimorphism
No verified
levensduur_max_jaar
1.21000003814697 verified

For anglers

Edibility
Rarely eaten verified
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 verified

Status & sources

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

Same genus Etropus

More from the family Paralichthyidae

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