African striped grunt

Lore & Background

The African striped grunt has an elongated body with a large eye and a large, oblique mouth, an obvious chin, and a short snout. It has a continuous dorsal fin containing 13 spines and 14-15 soft rays, while the anal fin has 3 spines and 7 soft rays. Underwater it appears black, but the upper body is brownish and the lower body silvery, with four white horizontal stripes along each flank, two of which run through the black eyes. The fins are yellow, with the caudal fin more vivid than the others. The maximum standard length is 50 cm, though a more typical length is 25 cm.

The species ranges along the western coast of Africa from Angola north to Morocco, including the islands in the Gulf of Guinea, the Macaronesian Islands, and the southern Iberian Peninsula, extending into the southern Mediterranean as far east as Tunisia. Vagrancy has occurred in the Bay of Biscay off western France. It occurs at depths between 2 and 180 m over sandy and rocky substrates, feeding on crustaceans and molluscs. Males and females form distinct pairs for spawning, and juveniles move inshore to take up territories.

The African striped grunt was first formally described in 1833 by the French zoologist Achille Valenciennes, with the type locality given as Gorée in Senegal. The specific name octolineatum means 'eight-lined,' a reference to the four stripes on each flank.

Reader's Guide

The African striped grunt is occasionally caught throughout its range, though it is apparently not common and the catch is not reported separately. It is caught using trammel nets, bottom trawls, and hook and line, and the catch is largely sold fresh. Its significance lies in its distinctive appearance—four white stripes on each flank and yellow fins—and its wide distribution along the western African coast and into the Mediterranean. The species is part of the grunt family Haemulidae and is classified as a sweetlips within the subfamily Plectorhinchinae. Its description by Valenciennes in 1833 from a type locality in Senegal adds historical context to its taxonomy. The fish's habitat over sandy and rocky substrates and its diet of crustaceans and molluscs define its ecological role. While not a major commercial species, it contributes to local fisheries where it is caught fresh.

Did You Know?

• The African striped grunt has four white horizontal stripes on each flank, totaling eight lines, reflected in its specific name octolineatum.
• It can reach a maximum standard length of 50 cm, but a more typical length is 25 cm.
• It is found at depths from 2 to 180 meters over sandy and rocky substrates.
• The species was first formally described in 1833 by French zoologist Achille Valenciennes from a type locality at Gorée, Senegal.