Genus Mollienesia is a group of freshwater fish that belongs to the Poeciliidae family. It is commonly referred to as the Molly fish, and there are several synonyms for this name, including Poecilia latipinna, Poecilia sphenops, and Mollienesia velifera. The Molly fish is popular among aquarium enthusiasts due to its vibrant colors, playful nature, and ease of care. These fish are known to adapt well to different water conditions and thrive in a community setting with other peaceful fish species. They are ovoviviparous, which means that they give birth to live young instead of laying eggs. Due to their peaceful behavior and attractive appearance, the Molly fish is an ideal addition to any aquarium.