Here is a young male Swordtail nibbling on the algae growing on a Aponogeton Plant. The picture above shows a mature male Neon Swordtail. You can see his sword projecting to the left from the bottom of his tail fin. Male Swordtails develop swords as they mature but females do not develop swords on their fins. This makes it very easy to tell a mature male Sword Tail from a mature female.
Swordtails are available in many color varieties.
Swordtails are livebearers like guppies, mollies, and platies. Swordtails are easy to breed, though not quite as easy as Mollies. Click here for more about breeding Mollies and raising the babies. Here is a male Sword Tail just like the Sword Tails for sale at our online tropical fish store. We have many different kinds of Swords.