Family: Cyprinodontiformes
Origins: North and Central America stretching from Veracruz, Mexico, to northwestern Honduras.
Scientific Name: Xiphophorus hellerii
Common Name: Swordtails
Size: 3"
Preferred pH range: 7.0 - 7.5
Temperature Range: 74-78 F
Temperment: Community / Peaceful
Comments: Extremely popular because they are one of the prettiest fish, the Swordtails are also easy to breed, fast growing and readily available.They are generally peaceful lively fish that swim in loosely grouped schools. Even though they are considered a good community fish, there are potentially many different behavior patterns and temperments. The individual fish vary from peaceful harmonious tankmates to bullies. Older males especially can tend to be aggressive toward each other and other species.
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These hardy and colorful fish make a wonderful addition to the passive community aquarium. Swordtails are easy to breed, and new color varieties are developed through selective breeding programs. The fry are born fully developed, and can be raised easily in a separate aquarium or net breeder inside the tank. The fish acquired the name from the long sword-like fin that protrudes from the male's tail. To reduce aggression, it is ideal to maintain a small school of 5 or more fish in the aquarium. Swordtails add interest and color to the passive community aquarium, and make a perfect addition for the novice to expert alike