Tankmate compatibility

What fish are compatible with Mollies?

Mollies compatibility guide. 6 compatible tankmates + 3 species to avoid + temperament + size + water-chemistry guidance.

Compatible tankmates (6)

Platies

Same care + temperament.

Guppies

Mollies larger but peaceful; coexist well.

Swordtails

Larger livebearer, similar care.

Cory catfish

Bottom dweller, peaceful.

Bristlenose pleco

Algae eater.

Tetras + rasboras

Peaceful schoolers; mollies ignore.

Avoid these tankmates (3)

Cichlids (most)

Aggressive.

Fin nippers (tiger barbs)

Mollies have flowing fins on some morphs.

Soft-water-only species

Mollies prefer harder water; mismatch with discus or wild apistos.

Plan your stocking

Use the stocking calculator to verify your specific plan. Browse stocking ideas by tank size for proven setups, or read the Mollies care guide for full husbandry details.

More compatibility guides

Browse all tankmate guides.