Swordtail


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

Swordtail

 

(Xiphophorus helleri), a fish of the family Poeciliidae of the order Cyprinodontidae. It is found in the fresh waters of Mexico and Guatemala. Males are up to 8 cm long, and females 12 cm. The lower part of the male’s caudal fin has the distinctive form of a sword. Swordtails are grayish olive, with a longitudinal red stripe and several shorter reddish bands parallel to it. The females, which are not as brightly colored as the males, are live-bearers. The swordtail is a popular aquarium fish. It hybridizes with the closely related platy (X. maculatus) to form black, red, lemon, mottled red, and other varieties.

REFERENCE

Il’in, M. N. Akvariumnoe rybovodstvo, 2nd ed. Moscow, 1968.
References in periodicals archive ?
Unlike Arm-based "modules," VersaLogic's Swordtail is a complete board-level computer.
The hind wings of the Coastal Swordtail are black and the species has a long tail.
Other close relatives, swordtails and platyfish of the genus Xiphophorus, however, are known to be mostly omnivorous with an emphasis on herbivory (e.g., Maddern et al.
Male-male competition and access to females in the swordtail Xiphophorus nigrensis.
Effect of meal frequency on growth and reproduction in the ornamental red swordtail, Xiphophorus helleri.
For many years, I was one of the founding members of a marsh duck club and set my pintail layouts exclusively to entice the swordtail birds.
Similar changes have also been reported in Atlantic salmon (Thomassen and Rosjo, 1989), turbot, Psetta maxima (Serot et al., 2001), swordtail, Xiphophorus helleri (Ling et al., 2006), and Atlantic cod, Gadus morhua (Morkore et al., 2007) fed vegetable oils as the lipid source in the diet.
Swordtail fry attend to chemical and visual cues in detecting predators and conspecifics.
Male swordtail fish (genus Xiphophorus) possess a long, colored extension of the caudal fin.