Xiphophorus hellerii

"Pineapple Swordtail"

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TRIO (♂♀♀) The swordtail (Xiphophorus hellerii) is a species of freshwater/brackish fish in family Poeciliidae of order Cyprinodontiformes. It is native to an area of North and Central America.

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Description

The swordtail (Xiphophorus hellerii) is a species of freshwater/brackish fish in family Poeciliidae of order Cyprinodontiformes. It is native to an area of North and Central America. stretching from Veracruz, Mexico, to northwestern Honduras. A live-bearer, it is closely related to the ‘platy’ (X. maculatus) and can crossbreed with it.

The male swordtail grows to a maximum overall length of 5.5 inches and the female to 6.3 inches. The name ‘swordtail’ is derived from the elongated lower lobe of the male’s caudal fin (tailfin). Sexual dimorphism is moderate, with the female being larger than the male, but lacking the ‘sword’. The swordtail prefers swift-flowing, heavily vegetated rivers and streams, but is also found in warm springs and canals. Omnivorous, its diet includes both plants and small crustaceans, insects, and annelid worms.

One of the most popular tropical aquarium fish, the swordtail has been bred into various hybrid forms for the aquarium hobby due to its hardiness and suitability for community tanks. Due to interbreeding with the southern platyfish or ‘platy’, most swordtails in aquariums are hybrids to some degree. The males’ elongated caudal fins have been found to significantly affect their chances at mating. The presence of a well-endowed male spurs the maturity of females, while it inhibits the maturity of juvenile males in the vicinity of the well-endowed male.[

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