Tankmate compatibility

What fish are compatible with Discus?

Discus compatibility guide. 5 compatible tankmates + 5 species to avoid + temperament + size + water-chemistry guidance.

Compatible tankmates (5)

Cardinal tetras

Tolerate the warm soft water discus need. Schools of 12+.

Rummy nose tetras

Same temp + parameter tolerance as discus. Schooling.

Corydoras sterbai

Tolerates 84°F+ better than other corys. Bottom dweller.

Bristlenose pleco

Hardy enough for warm tank. Algae eater.

German blue rams

Same warm soft water; centerpiece pair option.

Avoid these tankmates (5)

Most other corydoras

Cool-water cory species (paleatus, panda) struggle at 84°F.

Standard tetras (non-cardinal)

Most tetras prefer cooler water.

Common pleco

Sucks slime coat off discus at night.

Guppies + livebearers

Different water chemistry needs (livebearers = harder water).

Larger cichlids

Discus get harassed by aggressive cichlids.

Plan your stocking

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

More compatibility guides

Browse all tankmate guides.