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The threadfin rainbowfish or featherfin rainbowfish (Iriatherina werneri) is a rainbowfish, the only species in the genus Iriatherina. It is characterized by long ...
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 ...
Eleutheronema tetradactylum, the fourfinger threadfin, ... (6.6 ft), although 50 centimetres (20 in) is a more normal size. [2] Distribution
Rainbowfish usually eat floating flakes in captivity, because in the wild they will often eat insects floating on the surface. In a home setting, these fish need well-oxygenated water with a pH level of 6.8 – 7.2, optimal temperatures varying between 72 and 82 °F (22 and 28 °C), and plenty of aquatic plants to give them hiding places amid ...
These fishes vary in size from the redfin dwarf monocle bream (Parascolopsis boesemani), with a maximum published standard length of 17 cm (6.7 in), to the monogrammed monocle bream (Scolopsis monogramma) which has a maximum published total length of 38 cm (15 in).
The Atlantic threadfin is a medium-sized species of threadfin which grows to a maximum total length of 30 centimetres (12 in), although most fish have a total length of around 25 centimetres (9.8 in). [2] It has a pointed snout and an almost straight dorsal profile on its head. [3]
The giant African threadfin is, as its common name indicates, a large species of threadfin attaining a maximum total length of 200 centimetres (79 in), although the more common size is 150 centimetres (59 in). [2] It has a pointed snout and an almost straight dorsal profile on the head.
The king threadfin is a large threadfin which can attain a maximum total length of 170 centimetres (67 in) and a maximum published weight of 45 kilograms (99 lb), although the more common total length is 48 centimetres (19 in). [1] It has a pointed snout and the dorsal profile of the head is almost flat in young fish and concave in adults.