The Black Lyretail Molly (Poecilia latipinna) is a tropical community fish. They usually grow to about 3 inches in length. Their diet consists of flakes, frozen foods, or frozen-dried foods. The ideal water temperature for them is about 72 to 82°F and their swimming level is the middle. Their experience level is beginner and they require at least 5 gallons of water. They are moderately planted and they require aquarium salt.