Can Goldfish Live With Molly?
Goldfish and Molly are compatible. Temperature overlap 72–75°F. Both peaceful.
Conditions: Minimum 20 gallon tank.
Parameter Comparison
Tank Requirements for Goldfish + Molly
To keep Goldfish and Molly together, you need at minimum a 20 gallon tank. Molly should be kept in a school of 4+. Provide adequate filtration, stable temperature with a heater, and hiding spots to reduce stress.
Species Profiles
Goldfish
Carassius auratus
Goldfish are among the longest-kept ornamental fish, with a history spanning over 1,000 years. Despite their reputation as easy, bowl-dwelling pets, goldfish actually require spacious tanks with strong filtration. They are cold-water fish that should not be kept with tropical species. Common varieties include comets, fantails, orandas, and ryukins.
Full care guide →Molly
Poecilia sphenops
Mollies are versatile livebearers that come in many varieties including black, dalmatian, balloon, and sailfin. They prefer hard, alkaline water and can even tolerate brackish conditions. They are active, personable fish that breed easily.
Full care guide →