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Threadfin rainbowfish do well in aquariums of 20 US gallons (76 L), however 30 US gallons (110 L) is preferred. They are best housed in a "species only" tank; meaning that the tank is reserved for the Threadfins alone. Because of their tiny mouths, they can be difficult to feed.
Eleutheronema tetradactylum adults show a preference for shallow muddy substrates in coastal waters and they may enter rivers. The juveniles occur in estuaries. In the winter the adults move up rivers. It is normally observed in loose schools, but larger fish are more often recorded as pairs or individuals.
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 ...
Also known as golden wrasse, golden rainbowfish, and canary wrasse; scientific name halichoeres chrysus. Maximum length: 5.5 inches Wild habitat: Australia, Indonesia.
Whether you know the humble Guppy by its various other nicknames, like its more formal name, Poecilia Reticulata, Million Fish, or Rainbow Fish, this freshwater species is one of the most well ...
pH range Water Hardness Bleher's rainbowfish: Chilatherina bleheri: 12 cm (4.7 in) Red rainbowfish: Glossolepis incisus: 9–13 cm (3.5–5.1 in) Almost all rainbowfish species are bred in captivity and wild populations may be protected. [66] Threadfin rainbowfish: Iriatherina werneri: 3–4 cm (1.2–1.6 in) New Guinea rainbowfish ...
It feeds largely on crustaceans and fishes. They reach sexual maturity as males when they attain a fork length of 20–25 centimetres (7.9–9.8 in) and then changing sex to fertile females after an intermediate hermaphrodite stage when they reach a fork length of 30–40 centimetres (12–16 in). Spawning is governed by the phases of the moon. [2]
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