Mollies fish is a small group of live-bearing fish of the Poecilia genus (earlier, they were included with Mollienesia genus). They are rather popular and undemanding aquarium fish that even beginner aquarists can deal with. Due to selective breeding programs, many new variations were obtained, with different coloring and body shapes. They are all widespread and renowned tank dwellers, though quite often, they look very different. This is all due to their peacefulness, endurance, unpretentiousness, inexpensiveness, and easy breeding. Molly fish differ only in size and color, but the info about breeding, keeping, compatibility is the same for all of them.
