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Platies are native to the east coast of Central America and southern Mexico. [1] [2] Rainbow Platy (male) The two species, the southern platyfish and the variatus platy, have been interbred to the point where they are difficult to distinguish. Most platies now sold in aquariums are hybrids of both species. [2]
Xiphophorus is a genus of euryhaline and freshwater fishes in the family Poeciliidae of order Cyprinodontiformes, native to Mexico and northern Central America. Xiphophorus species can be divided into 3 groups based on their evolutionary relationships: platyfish (or platies), northern swordtails, and southern swordtails.
A live-bearer, it is closely related to the green swordtail (X. hellerii) and can interbreed with it. It is native to an area of North and Central America stretching from Veracruz, Mexico, to northern Belize. The southern platyfish grows to a maximum overall length of 6.0 centimetres (2.4 in).
It is popular due to its often colourful and variable patterns and its ability to survive in cooler waters than other fish; it can comfortably live at temperatures between 16 and 24 °C (61 and 75 °F). The species has also been used in genetic research.
The goldfish is classified as a coldwater fish, and can live in unheated aquaria at a temperature comfortable for humans. However, rapid changes in temperature, for example in an office building in winter when the heat is turned off at night, can kill them, especially if the tank is small.
Goldfish can live for long periods of time if they are fed a varied diet and housed in proper water conditions. The average lifespan of a goldfish is ten to fifteen years. [citation needed] The longest-lived goldfish on record lived to age 43. [8] The oldest living goldfish was Tish, won by a UK family at a funfair. [9]
[58] can live in full sea water [59] 66 °F - 84 °F (19 °C - 29 °C) 7 - 8 Endler's livebearer: Poecilia wingei: 3.8 cm (1.5 in) Black molly: Poecilia sphenops: 10 cm (3.9 in) Can live in full sea water [59] Sailfin molly: Poecilia latipinna: 10 cm (3.9 in) Gold and silver varieties commonly found; also thrive in brackish water/ full sea ...
Platypuses can give a low growl when disturbed, and a range of vocalisations have been reported in captivity. [ 21 ] Size varies considerably in different regions, with average weight from 0.7 to 2.4 kg (1 lb 9 oz to 5 lb 5 oz); males have average length 50 cm (20 in), while females are the smaller at 43 cm (17 in). [ 26 ]