Xiphophorus helleri
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Mature male swordtails are easily identified by the long sword -like extension to their tail.


Wild Swordtails are generally a dull green colour with a small extension to the tail fin. Selective breeding has produced a vast array of colour variations such as red, tuxedo, albino, green, red and white and numerous other colourations. The ‘sword’ extension of the tail of male fish has also been greatly enhanced in selectively bred fish, and more recently more elaborate fins has been developed such as Hi- Fin and Lyretails.

Swordtails are prolific breeders and successful breeding in a community tank will generally occur in one that is well planted as the plants provide hiding places for the fry to escape from being eaten by other fish.

Aquarium Industries Care Sheet