The Molly Fish, also known as Poecilia sphenops, is a small freshwater fish popular in home aquariums. They typically grow to about 2 to 4 inches in length and are known for their vibrant colors and peaceful nature. Molly Fish are livebearers, meaning they give birth to free-swimming young rather than laying eggs. These fish thrive in a variety of water conditions but prefer slightly brackish environments. They are social creatures and do best in groups, making them a great addition to community tanks. Molly Fish are also known for their hardiness, which makes them suitable for beginner aquarists.