About This Fish

Giant Threadfin

The Giant Threadfin (Polydactylus quadrifilis) is a marine ray finned fish which belongs to the family Polynemidae under Order Perciformes of Class Actinopterygii. It is also known as West African threadfin, Kujeli, Shiney Nose, Barbo, Barbudo, Capitaine, Ntsena. It occurs in the shallow and often muddy waters of estuaries and lagoons or along beaches in the Eastern Atlantic mainly from Senegal to Congo.

The giant threadfin's body is compressed and elongated with blunt snout. Back of the body is dull silvery grey or brown while ventral side is whitish in color and a dark smudge sometimes is present on the gill cover. Body is covered with small ctenoid scales. Mouth is large, upper lip is absent while lower lip is well developed. Pectoral fin is divided into two parts, of which, lower portion contains 4 -5 detached thread like rays which are slightly longer than the upper pectoral rays. It has two widely separated dorsal fins, of which, second dorsal is deeply concave. First dorsal has 8 spines while second with 1 spines and 11-12 soft rays. Anal fin is located just opposite to the second dorsal fin and it is deeply concave with 2 - 3 spines and 11 - 12 soft rays. Lateral line is nearly straight and caudal fin is deeply forked with equal lobe. It is a carnivorous feeder, of which, the main diet consists of small fish, crabs, prawns, squid or octopus. It attains up to 200 cm in length and 75 kg in weight.

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