The Black Molly Poecilia spenops), is sometimes known as the Common Molly or Short Finned Molly.
In the wild these fish will travel to brackish water then back to freshwater, and there is even a salt water type of Molly. This fish is highly adaptable however most fish sold in fish shops are tank bred and are not so hardy .The Black Molly is an excellent community fish and will help clean the algae off decorations, rocks and the side of the aquarium glass.
It is best to have more females than males to keep fighting down and these livebearers will breed in the home aquarium with every chance the juveniles will survive to adulthood.
It is important if there is not sufficient algae in the tank that this fish is fed some vegetable matter as part of its diet. It can be placed in a medium sized aquarium and prefers a temperature between 20-28 degrees centigrade. A PH of 7.5-8 and neutral to hard and alkaline water is beneficial to this fish.
Small amounts of aquarium salt is often added to the water of these fish and they are deemed as being easy to keep.