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Guinean tonguesole (Cynoglossus monodi) — Cynoglossidae

Guinean tonguesole

Cynoglossus monodi
Family: Cynoglossidae
LC · Least Concern

The Guinean tonguesole (Cynoglossus monodi) is a brackish-water fish of the family Cynoglossidae that grows up to 40 cm.

Length
40 cm
Water
Brackish
Depth
10.0–30.0 m
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Flatfish
Substrate
Sand / mud bottom
Danger
Harmless
Range
Eastern Atlantic along the coast of West Africa, over sandy and silty bottoms of coastal water and estuaries; tolerates brackish water.
Edibility
Highly prized

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Description

The Guinean tonguesole is a long, tongue-shaped flatfish of the family Cynoglossidae (tonguefishes) reaching about 40 cm. The narrow, rearward-tapering body has a rounded, hook-shaped snout; the dorsal, tail and anal fins merge into a continuous fringe. Both eyes lie close together on the left side of the head. The species lives on sand and mud bottoms of turbid coastal water and estuaries along the West African coast and tolerates brackish water. On the bottom it searches, mainly at night, for worms, small crustaceans and molluscs. With its fine flesh it is a valued commercial fish in West Africa.

Frequently asked questions

How do you recognise the Guinean tonguesole?

The Guinean tonguesole has a flatfish-shaped body, is mainly brown and shows a plain pattern. Long, tongue-shaped flatfish with a rounded, hook-shaped snout; the dorsal, caudal and anal fins run continuously into one another.

Where does the Guinean tonguesole live?

The Guinean tonguesole lives in brackish water and is mostly found around sand or mud bottom. Eastern Atlantic along the coast of West Africa, over sandy and silty bottoms of coastal water and estuaries; tolerates brackish water.

How big does the Guinean tonguesole get?

The Guinean tonguesole grows to a maximum of about 40 cm. On average the species is around 30 cm.

Is the Guinean tonguesole dangerous to humans?

No, the Guinean tonguesole is harmless to humans. None required: this species is harmless to humans.

Is the Guinean tonguesole edible?

Yes, the Guinean tonguesole is a highly prized food fish.

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All data

Identification

English name
Guinean tonguesole verified
Scientific name
Cynoglossus monodi
Family
Cynoglossidae
Other names
Guinean tonguesole verified

Appearance

Size class
Medium verified
Max length (cm)
40.0 verified
Average length (cm)
30.0 verified
Body shape
Flatfish verified
Dominant colour
Brown sourced
Pattern
Plain sourced
Tail shape
Straight inferred
Mouth position
Inferior (downward) inferred
Lips
Thick / fleshy inferred
Barbels
No verified
Dorsal fins
One continuous sourced
Dorsal spines
No verified

Habitat & distribution

Water type
Brackish verified
Substrate
Sand / mud bottom verified
Min depth (m)
10.0 verified
Max depth (m)
30.0 verified
Natural range
Eastern Atlantic along the coast of West Africa, over sandy and silty bottoms of coastal water and estuaries; tolerates brackish water. verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore verified
Diet (detail)
Worms, small crustaceans and molluscs from the bottom sourced
Social behaviour
Solitary verified
Territorial
No verified
Activity
Nocturnal inferred
Reproduction
Separate sexes verified
Sexual dimorphism
No verified
Seasonality
Bottom-dweller of turbid coastal water; the young fish is still symmetrical and sinks to the bottom after metamorphosis. sourced
Special features
Long, tongue-shaped flatfish with a rounded, hook-shaped snout; the dorsal, caudal and anal fins run continuously into one another. sourced

For anglers

Edibility
Highly prized verified
Fishing method
Bottom fishing with natural bait (worm, shrimp or fish) on or just above the seabed. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified
First aid
None required: this species is harmless to humans. sourced

Status & sources

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

Same genus Cynoglossus

More from the family Cynoglossidae

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