The Lyretail Molly (Poecilia latipinna or Poecilia sphenops, depending on variety) is an active, peaceful livebearer known for its elegant, lyre-shaped tail and vibrant colors. Reaching 3–5 inches in length, it thrives in a well-maintained aquarium of at least 20 gallons with slightly brackish or freshwater conditions. Ideal water parameters include a temperature of 72–82°F (22–28°C), pH between 7.5–8.5, and moderate to hard water. Lyretail Mollies are omnivorous, feeding on algae, flakes, vegetables, and small live or frozen foods. They do best in small groups with peaceful tankmates and benefit from planted tanks with some open swimming space. Regular water changes and stable parameters are key to keeping them healthy and vibrant.
Aspect
Details
Scientific Name
Poecilia latipinna / Poecilia sphenops
Common Name
Lyretail Molly
Origin
Central and North America
Size
3–5 inches (7–12 cm)
Tank Size
Minimum 20 gallons
Temperature
72–82°F (22–28°C)
pH
7.5–8.5
Water Hardness
10–25 dGH
Diet
Omnivorous (algae, flakes, vegetables, live/frozen foods)
Temperament
Peaceful, social, best in groups
Tank Setup
Planted with open space; can tolerate light brackish water
Lifespan
3–5 years
Special Needs
Benefits from aquarium salt and regular water changes