Molly, any of several species of tropical fish of the genus Poecilia, in the live-bearer family, Poeciliidae (order Cyprinodontiformes). Hardy and attractive, mollies are popular aquarium fish ranging from about 5 to 13 cm (2 to 5 inches) long. Well-known species include the molly (P. sphenops)
Black Molly- the black beauty in your aquarium
Freshwater Livebearer Fish For Sale: Dalmatian Balloon Molly
Gold Lyretail Molly
Freshwater Livebearer Fish: Golden Panda Lyretail Molly
Tropical Molly Fish
Livebearing Aquarium Fish: Habitat, Diet, and Breeding
Dalmatian Molly Group: Tropical Fish for Freshwater & Brackish Aquariums
Livebearer hi-res stock photography and images - Alamy
Molly's the word! - Practical Fishkeeping