Can Guppy Live With Molly?
Guppy and Molly are compatible. Temperature overlap 72–82°F. Both peaceful.
Conditions: Minimum 20 gallon tank.
Parameter Comparison
Tank Requirements for Guppy + Molly
To keep Guppy and Molly together, you need at minimum a 20 gallon tank. Guppy should be kept in a school of 3+. 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
Guppy
Poecilia reticulata
Guppies are colorful, hardy livebearers that are perfect for beginners. Males sport spectacular tail patterns in every color imaginable, while females are larger and less colorful. They breed prolifically — a single female can produce 20–50 fry every month — so plan accordingly or keep only males.
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 →