Swordtail Fish
Common Names Swordtail Water hardness (dGH): dGH 12.0 - 18.0 N Temperament : peaceful Origin : Central America Adult Size : 10.0 - 12.0 cm ( 3.9 - 4.7 in)
X. hellerii has become a nuisance pest as an introduced species in a number of countries. It has caused ecological damage because of its ability to rapidly reproduce in high numbers. Feral populations have established themselves in southern Africa, including Natal, Madagascar and eastern Transvaal in South Africa and Otjikoto Lake in Namibia. Significant populations have also established themselves along the east coast of Australia.
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Cyprinodontiformes
Family: Poeciliidae
Genus: Xiphophorus
Species: X. hellerii
Feeding
You can feed them flakes, live-frozen worms and other food designed for tropical aquarium fish. Like all fishes, they need varied food. Especially, they need green foods which contain algae.