Can Johanni Cichlid live with Oscar?

Troubleshooting community setups: see the compatibility result using temperature, pH, GH/KH, adult size, behavior, schooling needs, and predator/prey rules.

Quick Summary: No, this pairing should usually be avoided. We evaluated Johanni Cichlid and Oscar for 4 specific conflict codes. Plan for at least 75 gallons.

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No, avoid this pairing

Data confidence: high

Verified sources: Mbuna overview | Labidochromis caeruleus overview

johanni cichlid | oscar | johanni cichlid | oscar

Observed photo context

Observed aquarium photo examples

These photos show observed aquarium setups for the selected species. They are useful context, but they do not change the compatibility result or replace tank-size, temperament, group-size, and water-parameter checks.

Tiger oscar cichlid with orange patterning
Tiger oscar cichlid with orange patterning.

Water parameter comparison

Johanni Cichlid temperature72-82F
Oscar temperature74-81F
Johanni Cichlid pH7.5-8.8
Oscar pH6-8
Johanni Cichlid GH10-20 dGH
Oscar GH5-20 dGH
Minimum tank75 gal
Last updated2026-06-11

Confidence: high. Aggression, predator/prey, shrimp risk, schooling, and tank size rules are evaluated from curated freshwater attributes.

Next steps

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