Swordtails are native to an area between North and Central America. They get their name from their elongated tail fin. Swordtails come in many bright colors, like orange, black, white and green. The ornamental fish market has a very high demand for these species. The male swordtail grows to a length of 14 cm while the female grows to a length of 16 cm. Only the males of the species possess ‘swords’ or elongated tail fins. The longer the ‘sword’, the more females it will attract. Swordfishes are omnivores and require both vegetation and meat in their diet. Unless the tank is large enough, avoid placing more than one male in it, as they are aggressively territorial.
Swordtails are livebearers and give birth to as many as a 100 fries in a go. They give birth to their young ones, once the eggs are fertilized inside the females’ body. The eggs are fertilized when the sperms are deposited inside the female by the male. The fertilized eggs grow inside the body of the female for 5 weeks. A female can deliver from 5 to a 100 fries at a time. The number of fries will depend upon the size of the female swordtail. The ratio of the male and female swordtail should be 1:5 in a tank.