Swordtail -- xiphophorus helleri See more aquarium fish pictures.
© Aaron Norman

Scientific name: Xiphophorus helleri

The Swordtail grows to 3.5 inches and appears in a variety of color patterns. This live-bearer is hardy as long as excellent water quality and frequent partial water changes are provided. It is an accomplished jumper, so a full aquarium hood with close-fitting openings for the filter and heater should be used. Males can become aggressive toward each other, so a tank should hold only one.

Aquarium Fish Image Gallery

The Swordtail does well at a water temperature between 70º and 78º Fahrenheit with a pH of 7.0 to 8.3 and water that is moderately to relatively hard. It will eat all flake and freeze-dried foods and should be offered live brine shrimp occasionally.

To learn more about freshwater aquariums, see: