This article is about the freshwater fish. For other uses, see Moonfish.
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Southern platyfish
Female ‘rainbow wagtail’ platy
Conservation status
Data Deficient (IUCN 3.1)[1]
Secure (NatureServe)[2]
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Class:
Actinopterygii
Order:
Cyprinodontiformes
Family:
Poeciliidae
Genus:
Xiphophorus
Species:
X. maculatus
Binomial name
Xiphophorus maculatus
(Günther, 1866)
The southern platyfish, common platy, or moonfish (Xiphophorus maculatus) is a species of freshwater fish in family Poeciliidae of order Cyprinodontiformes. 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). Sexual dimorphism is slight, the male's caudal fin being more pointed. The anal fin of the male fish has evolved into a gonopodium, a stick-shaped organ used for reproduction. The female southern platyfish's anal fin is fan shaped. Wild varieties are drab in coloration, lacking the distinctive dark lateral line common to many Xiphophorus species.
X. maculatus prefers slow-moving waters of canals, ditches, and warm springs. Omnivorous, its diet includes both plants and small crustaceans, insects, and annelid worms.
Breeders have developed a multitude of color varieties (e.g. orange, red, yellow, red/black, and black/white) which are common aquarium fish for hobbyists.
The southern platyfish is commonly known simply as the platy (pl. platys or platies), from the fish's original generic name, Platypoecilus.
^Daniels, A. (2019). "Xiphophorus maculatus". IUCN Red List of Threatened Species. 2019: e.T191784A2003232. doi:10.2305/IUCN.UK.2019-2.RLTS.T191784A2003232.en. Retrieved 19 November 2021.
^"Xiphophorus maculatus - (Günther, 1866)". NatureServe. Retrieved 31 May 2023.
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