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Flagfin mojarra (Eucinostomus melanopterus) — Gerreidae

Flagfin mojarra

Eucinostomus melanopterus
Family: Gerreidae
LC · Least Concern

The Flagfin mojarra (Eucinostomus melanopterus) is a saltwater fish of the family Gerreidae that grows up to 30 cm.

Length
30 cm
Water
Saltwater
Depth
0.0–25.0 m
Diet
Carnivore
Behaviour
Schooling
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Sand / mud bottom
Danger
Harmless
Range
Tropical Atlantic Ocean on both sides, in the east along the coast of West Africa, on sandy coasts and in lagoons and estuaries.
Edibility
Commonly eaten

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Description

The flagfin mojarra is a small, bright silvery fish of the family Gerreidae (mojarras) reaching about 30 cm. The laterally compressed body has a far-protrusible, tube-shaped mouth, with which the fish sucks small invertebrates out of the sand; the dorsal fin bears a conspicuous black tip. The species lives in schools on sandy shores and in lagoons and estuaries of the tropical Atlantic on both sides, in the east along the West African coast, and tolerates brackish water. On the bottom it sifts the sand for worms, crustaceans and molluscs. Locally it is landed by coastal fisheries and eaten.

Frequently asked questions

How do you recognise the Flagfin mojarra?

The Flagfin mojarra has a torpedo-shaped body, is mainly silver-grey and shows a plain pattern. Small, bright silver fish with a tube mouth that can be protruded far downwards; the dorsal fin has a black tip.

Where does the Flagfin mojarra live?

The Flagfin mojarra lives in the sea (marine waters) and is mostly found around sand or mud bottom. Tropical Atlantic Ocean on both sides, in the east along the coast of West Africa, on sandy coasts and in lagoons and estuaries.

How big does the Flagfin mojarra get?

The Flagfin mojarra grows to a maximum of about 30 cm. On average the species is around 23 cm.

Is the Flagfin mojarra dangerous to humans?

No, the Flagfin mojarra is harmless to humans. None required: this species is harmless to humans.

Is the Flagfin mojarra edible?

Yes, the Flagfin mojarra is commonly eaten.

More photos

Flagfin mojarra (Eucinostomus melanopterus) — Gerreidae — 2
iNaturalist ((c) Kenneth Manole, some rights reserved (CC BY-NC))
Flagfin mojarra (Eucinostomus melanopterus) — Gerreidae — 3
Squidpastry (CC BY-NC 4.0) via GBIF — iNaturalist
Flagfin mojarra (Eucinostomus melanopterus) — Gerreidae — 4
iNaturalist ((c) Adrian Torres B., some rights reserved (CC BY-NC))
Flagfin mojarra (Eucinostomus melanopterus) — Gerreidae — 5
Wikimedia Commons — Smithsonian Environmental Research Center (CC BY 2.0)
Fin

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All data

Identification

English name
Flagfin mojarra verified
Scientific name
Eucinostomus melanopterus
Family
Gerreidae
Other names
Flagfin mojarra; Flagfin Mojarra; Butterfish verified

Appearance

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

Habitat & distribution

Water type
Saltwater verified
Substrate
Sand / mud bottom verified
Min depth (m)
0.0 verified
Max depth (m)
25.0 verified
Natural range
Tropical Atlantic Ocean on both sides, in the east along the coast of West Africa, on sandy coasts and in lagoons and estuaries. verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore verified
Diet (detail)
Small bottom-dwelling invertebrates, sucked up from the sand sourced
Social behaviour
Schooling verified
Territorial
No verified
Activity
Diurnal inferred
Reproduction
Separate sexes verified
Sexual dimorphism
No verified
Seasonality
Forms shoals over sandy bottoms, often in brackish lagoons; eggs and larvae drift in open water. sourced
Special features
Small, bright silver fish with a tube mouth that can be protruded far downwards; the dorsal fin has a black tip. sourced

For anglers

Edibility
Commonly eaten 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 Eucinostomus

More from the family Gerreidae

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