Oscar Cichlid
Astronotus ocellatusOscar Cichlid (Astronotus ocellatus) is a solo centerpiece fish for a cycled 75+ gallon freshwater aquarium. Plan for about 14 inches as an adult, 74-81°F water, pH 6-7.5, and moderate care. Keep only one per tank, and choose tankmates with matching water needs and low aggression.

Water Range
- pH
- 6-7.5
- GH
- 3-18 dGH
- KH
- 2-12 dKH
Behavior
- Temperament
- Assertive
- Fin nipping
- 0/5
- Territory
- 5/5
Diet and Care
- Diet
- carnivore/omnivore
- Diet difficulty
- 2/5
- Care difficulty
- 3/5
Planning Notes
Run Oscar Cichlid through the checker with your tank size, cycle status, water, group count, and tankmates before buying.
Check my tankCompare this speciesPut Oscar Cichlid beside another profile to compare water range, size, diet, schooling needs, and behavior.
Open comparisonWill plants work?Match Oscar Cichlid against aquarium plants for nibbling, uprooting, cover, flow, and water-range flags.
Open plant matchAsk about my setupAsk Advisor how Oscar Cichlid fits with your current tank, recent logs, plants, and livestock.
Ask AdvisorView native rangeOpen the origins map to see reviewed native-range coordinates and regional context for Oscar Cichlid.
Open origins mapFrom keepers
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