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Swordtail
Origin: Central America.
Temperament: Peaceful. Excellent for community tanks or for people
new to the hobby.
Feeding: Feed with flakes or algae. Some salt in the water will do
the fish good. Very easy to keep.
Sexing: Sex can be easily determined by
the male's modified anal fin
(gonopodium) and by the male's long extension on the bottom half of the
tail fin. Females grow larger and have a more rounded body.
Comments: Many varieties of Swordtails are available including:
Simpson, with a larger dorsal fin; Wagtail and Tuxedo, with black on its tail and body;
and Lyretail, one of the most popular varieties because of its excellent finnage.
"Wag Swordtails" are hybrid crosses with Platy.
There are many natural and native
color forms due to the very extensive natural habitats. For green swordtail, the
ground color is olive gray; scale rows along the middle of the body are green to
blue; belly is white and there is a light red, dark red or brown longitudinal
line on the flanks in all populations (regional forms). In a few variants, there
can be one or two additional lines above and one or two below this line. In
almost all populations, the dorsal fin has spots or flecks of red. This
coloration can also appear in the caudal fin. The sword of males is bright
yellow and edged more broadly in black below than above. Old fish (3 to 4 years
old) can have a totally black sword from the caudal fin all the way to the tip
of the sword.
Color Variations: Click on Images for
Larger View

Brick Sail Fin |

Gold Swordtail |

Green Lyretail |

Tuxedo Sword |

Montezuma Sword |

Brick Sword |

Green Swordtail |

Velvet Sword |
Breeding Swordtails and Raising
Fry (Opens a new browser window for
members of Aquarium-Club.com)
Books About Platys and General Aquarium Reference Books:
This page was last
updated on
10/31/09.
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