Mollies are a highly versatile fish which can survive in both freshwater and saltwater if acclimated very slowly. Like other livebearers, the Molly is easy to breed and make a fascinating fish for your aquarium. They like to live in a community of at least 3 together, and we recommend you keep the sexes separate if you do not wish to breed them! The Molly can live with other fish; however, it is worth noting that they should be in a community aquarium of similar size with no long-finned fish, or fin nippers.