Fish and fishingof Côte d’Ivoire and the Gulf of Guinea FREN
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Species sheet 44
CoastalOn the bottom · demersalLC · Least Concern

Grogneur métis (Bastard grunt)

Pomadasys incisus (Bowdich, 1825)

Family Haemulidae • the small silvery grunt of coastal grounds

Identification plate: Grogneur métis (Bastard grunt)
Plate from the V13 edition, under review

2 look-alikes to know

Don’t mix it up: Grogneur métis (Bastard grunt)

How to tell them apart: With the sompat grunt (Pomadasys jubelini) and the pigsnout grunt (Pomadasys rogerii), both larger. The small size and the yellow dorsal tinge help recognise the bastard grunt. Examine ray counts in doubtful cases.

How to tell them apart: With the bastard grunt (Pomadasys incisus), smaller. Fine distinction between West African grunts relies on colouring, size and ray counts.

Clue noted on sheet 43, Grogneur de Roger (Pigsnout grunt).

ID card
French nameGrogneur métis. Other names: carpe-blanche, grogneur bâtard, bâtard.
Scientific namePomadasys incisus (Bowdich, 1825)
FamilyFamily Haemulidae
English name (FAO)Grogneur métis (Bastard grunt)
Local namesOn Ivorian markets and landing sites: “Carpe blanche” (Ouattara et al., 2016).
HabitatMarine, coastal demersal over soft sandy and muddy bottoms of the shelf.
IUCN statusLC Least Concern. A common species of coastal grounds.

Plate: Guide de détermination des poissons des lagunes de Côte d'Ivoire (identification guide to the fishes of the lagoons of Côte d'Ivoire), E. Charles-Dominique and J. Raffray, CRO Abidjan, Archives scientifiques, 1986. Working reproduction, rights to be confirmed before publication.

Identification

A small grunt with an oval, compressed body, silvery with reflections, back slightly darker. Two pores and a pit under the chin, like all Pomadasys. Often a yellow tinge on the upper back or at the base of the dorsal fin. Produces grunting sounds. Smaller than its relatives.

Features that never mislead

Small size for a grunt, oval compressed body.

Two pores and a chin pit, the mark of the grunts.

Frequent yellow tinge on the upper back.

Produces grunting sounds with the swim bladder.

Size and weight

A small grunt, typical catches around 15 to 25 cm. Maximum size about thirty centimetres depending on the population. To be confirmed on FishBase for the Ivorian coast.

Behaviour and ecology

A coastal, gregarious demersal species that searches soft bottoms for worms, molluscs and small crustaceans. Forms concentrations on the shelf.

Present in the Eastern Atlantic, from West African waters to the Mediterranean, where it is spreading. Common on the Ivorian coast in bottom fishing. IUCN status: Least Concern.

Reproduction and season

Coastal spawning, pelagic eggs and larvae. Early maturity. Local spawning data to be documented.

Fishing practice

Techniques, from most to least effective

Bottom fishing with small bait (worm, shrimp) over coastal grounds.

With a baited multi-hook rig (sabiki type) over concentrations.

Caught in coastal trawls and nets.

The fight: modest given the small size, vibrations on fine line. Mainly a frying and market fish, caught in numbers.

Eating quality

Decent white flesh, eaten fried or braised, often sold in batches. A popular fish at an affordable price. To be eaten fresh.

Sources: FishBase (Pomadasys incisus, Bowdich 1825); IUCN Red List, LC; FAO Eastern Central Atlantic; Ouattara et al. 2016.