Mollies
Mollies are considered live bearers and in the same family of Swordtails, Platies and guppies. these fish are very easy to breed even for a novice aquarist and it is easy to tell the females from the males. In fact most of the colors you see in mollies today are a result of the breeding practices of people who raise them.To keep your mollies happy, you want to put them in a fish tank that has a minimum of 15 gallons of water. Be sure there is a quarter of inch of gravel on the bottom and you have a good heater that can keep the water between 70 to 82°F. Just like other livebearers, Mollies will do best if you put a tablespoon of aquarium salt for every 5 gallons of water. Mollies are unique in that they can actually live in fresh water or salt water but adding little but of salt to freshwater aquarium will help them as many as other types of breeds.
Mollies can actually be a little hard to care for though and are a good fish that you can use to gauge the quality of your water as they will start to show signs of illness as soon as the water starts to become contaminated. in freshwater tanks, you'll need to do water maintenance frequently however if you keep them in a reef aquarium that natural ecosystem rarely requires a water change.
Mollies are easy to feeding you can feed them the floating flake food that you find in most pet stores and mix in a few freeze dried blood worms and even some black worms for a treat.
You should have more females than males in the tank and mollies can share attack with several writers of fresh including Angelfish, Swordtails, Plecosstomus, Catfish, Corydoras and large sized Tetras including Silver Tips, Red Serpaes, and Black Skirts.
Mollies can get to be 5 inches in length and if kept in the proper environment can live to be about five years old.