Freshwater Aquarium Fish Molly. Molly fish or just mollies are freshwater fish from the genus Poecilia in the Poeciliidae family. Theyre a livebearer species that requires a spacious tank with temperature-controlled water to avoid sudden and dramatic temperature fluctuations.
The exact behavioral traits of the fishes can vary dependent on. Supply the fish just as much as they are able to eat within a few minutes. There are currently 40 species in this genus so 39 of them are mollies.
Mollies can do well in a community tank with other fish provided the right water parameters are present.
The molly is a tropical freshwater fish. They can live in both freshwater and brackish water. Mollies and guppies are very similar in nature. Molly fish are small-sized tropical fish that as a result of hybridization and selective breeding are available in a diverse range of colors and specimens.