Species Profile
Oscar
Astronotus ocellatus
Cichlidsaggressive
Adult size
13″
Minimum tank
75 gal
Temperature
74–81°F
pH
6–7.5
Schooling
Solitary OK
Water level
mid
Diet
Pellets, frozen, live (small fish/insects)
Notes
Personality-rich 'wet dog' cichlid. Will eat anything it can swallow. Powerful waste producer, needs serious filtration.
Compatible Tankmates
Best tank mates for Oscar
Every species below passes the compatibility engine when paired with Oscarin a suitably sized tank. Verdicts come from the same rules the builder uses — click a card to see that species' own care profile and its tank mates in turn.
Male Betta
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Angelfish
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Black Skirt Tetra
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Cockatoo Apisto
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Kribensis
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Yoyo Loach
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Buenos Aires Tetra
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Three-Spot Gourami
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Electric Blue Acara
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Convict Cichlid
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Pictus Catfish
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Odessa Barb
ExcellentPeaceful pairing — temperament, water parameters, and size all line up.
Photo: Jón Helgi Jónsson (Amything) / Wikimedia Commons · Source · CC-BY-SA-3.0