Is Threadfin kosher?

About Threadfin

Family polynemidae. Including: Blue bobo (Polydactylus approximans); Barbu (Polydactylus virginicus); Moi (Polydactylus sexfilis) Threadfins are silvery grey ray-finned fish of the family Polynemidae. Found in tropical to subtropical waters throughout the world, the threadfin family contains nine genera and about 40 species. A distantly related species sometimes known by the name threadfin, Scyris indica, is properly the Indian threadfish (family Carangidae). Ranging in length from 11 cm (4.5 in) in the dwarf threadfin (Parapolynemus verekeri) to 2 m (6.6 ft) in fourfinger threadfin (Eleutheronema tetradactylum) and giant African threadfin (Polydactylus quadrifilis), threadfins are both important to commercial fisheries as a food fish, and popular among anglers. Their habit of forming large schools makes the threadfins a reliable and economic catch. Threadfins are silvery grey ray-finned fish of the family Polynemidae. Found in tropical to subtropical waters throughout the world, the threadfin family contains nine genera and about 40 species. A distantly related species sometimes known by the name threadfin, Scyris indica, is properly the Indian threadfish (family Carangidae). Ranging in length from 11 cm (4.5 in) in the dwarf threadfin (Parapolynemus verekeri) to 2 m (6.6 ft) in fourfinger threadfin (Eleutheronema tetradactylum) and giant African threadfin (Polydactylus quadrifilis), threadfins are both important to commercial fisheries as a food fish, and popular among anglers. Their habit of forming large schools makes the threadfins a reliable and economic catch. Description Their bodies are elongated and fusiform, with spinous and soft dorsal fins widely separated. Their tail fins are large and deeply forked, indicating speed and agility. The mouth is large and inferior; a blunt snout projects far ahead. The jaws and palate possess bands of villiform (fibrous) teeth. Their most distinguishing feature is their pectoral fins: they are composed of two distinct sections, the lower of which consists of three to seven long...