About the Black Lyretail Molly The Black Lyretail Molly (Poecilia sphenops) is a popular freshwater aquarium fish known for its vibrant black coloration and flowing, lyre-shaped tail fin. These peaceful, livebearing fish are relatively easy to care for and adapt well to various water conditions, making them a great choice for both beginners and experienced hobbyists. They are native to Central America and are captive-bred for the aquarium trade. Husbandry & Care Temperament: Peaceful Minimum Tank Size: 20 Gallons Water Temperature: 70-82 °F Water pH: 7.2-8.4 Social Group: Solitary, Harem, or Breeding Colony. Keeping 2-3 Females per Male is crucial to ensure that females are not consistently courted or harassed by the male. Diet: Omnivorous; Commercial Flakes, Algae, Blanched Vegetables (Spinach Zucchini), Frozen Brine Shrimp/Bloodworms, Live Baby Brine Shrimp Compatible with: Peaceful Community Fish, avoid placing with aggressive and fin-nipping species.