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It is known under a number of common names including diamond rainbowfish, [3] neon rainbowfish, Praecox rainbowfish, dwarf neon rainbowfish, peacock rainbowfish, and Teczanka neonowa. [4] It is endemic to the Mamberamo River basin in West Papua in Indonesia [ 2 ] and common in the aquarium trade.
Melanotaenia praecox (M. C. W. Weber & de Beaufort, 1922) (Neon rainbowfish) Melanotaenia pygmaea G. R. Allen , 1978 (Pygmy rainbowfish) Melanotaenia rubripinnis G. R. Allen & Renyaan , 1998 (Red-finned rainbowfish)
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 (22–28 °C), and plenty of aquatic plants to give them hiding places amid their school. If properly cared for, Rainbowfish can live up to 5 years in captivity. [5]
Breeding takes place year round and the male and female fish form pairs in which the females releases the eggs and the male fertilises them. 60-70 eggs are laid at each spawning and the golden coloured, round eggs attach to submerged vegetation with an adhesive filament.
Ceratotherium praecox, an extinct rhinoceros; Denticetopsis praecox, a South American fish; Deroceras praecox, an east European slug; Iotabrycon praecox, an Ecuadorean fish; Melanotaenia praecox, a rainbow fish from West Papua; Mordacia praecox, a lamprey from Australia; Thamnophilus praecox, the Cocha antshrike, a bird from Ecuador; Persia ...
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Encyclopedia of Aquarium and Pond Fish (2005) (David Alderton) Anon. (2001). Fish collection database of the National Museum of Natural History (Smithsonian Institution). Smithsonian Institution - Division of Fishes. Allen, G.R. (1991). Field Guide to the Freshwater Fishes of New Guinea. Christensen Research Institute, Madang, Papua New Guinea.
A female individual. The species is a large and muscular rainbowfish, generally attaining a length 15 cm (5.9 in). Individuals are a dark lavender colour at the basic level with a rosy chest. [2] Males have deeper bodies than the females, and have extended fins, as well as the back half of their bodies being coated in a reflective golden-orange.