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Swordtail

Common nameSwordtail Picture of female Swordtail

Picture of a pair of Swordtails

Photos taken at Wharf Aquatics
© Sean Evans

Scientific nameXiphophorus helleri, though many aquarium varieties are cultivated strains and may be hybrids of different Xiphophorus species.
Synonyms
SizeMales up to 4" (10cm), females slightly larger.
OriginCentral America
Tank setupPlanted community aquarium, with open swimming space.
CompatibilityMay be slightly aggressive, but generally compatible as a community fish. Keep 2-3 females per male to avoid constant harrasment of a single female.
Temperature21-26oC (70-79oF)
Water chemistryMedium hard and slightly alkaline, pH 7.0-8.0
The addition of salt to the tank is not necessary.
FeedingWill eat most aquarium foods, use flake, granular and frozen or live foods to vary the diet.
SexingOnly males have the 'sword' and a gonopodium (modified anal fin). Females have a gravid patch.
BreedingThe female is best removed to a separate tank to give birth. There may be 20-80 or more young, depending on the size of the female.
Comments A large number of colour varieties have been produced, and forms with an additional 'sword' on the upper tail fin.

 

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The Tropical Tank Copyright © 2000-2008 Sean Evans This website was last updated on 18th January 2008