Oscar Tank Mates & Compatibility

Oscar

Astronotus ocellatus

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TemperamentAggressive (7/10)

Adult Size30 cm

Temperature23–27°C

Water TypeFreshwater Only

Swim ZoneMid-level, Bottom

StockingSolo or group

Stocking calculator

Compatible on paper, but will Oscar fit your setup?

Tank mates can still go wrong if the tank is too small, already full, or the water is a poor match. Add Oscar to the stocking calculator to check space, stocking pressure, and water needs before you add it.

Oscar

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Showing 1 - 24 of 183 Tank Mates

Oscar & African Butterfly Cichlid

Astronotus ocellatus · Anomalochromis thomasi

🟡Possible with Caution

Oscar: AggressiveAfrican Butterfly Cichlid: Mostly Peaceful

Oscar & African Butterfly Fish

Astronotus ocellatus · Pantodon buchholzi

🟡Possible with Caution

Oscar: AggressiveAfrican Butterfly Fish: Semi-Aggressive

Oscar & African Jewel Cichlid

Astronotus ocellatus · Hemichromis bimaculatus

🟡Possible with Caution

Oscar: AggressiveAfrican Jewel Cichlid: Aggressive

Oscar & African Lungfish

Astronotus ocellatus · Protopterus annectens

🟡Possible with Caution

Oscar: AggressiveAfrican Lungfish: Highly Aggressive

Oscar & Agassiz's Dwarf Cichlid

Astronotus ocellatus · Apistogramma agassizii

🟡Possible with Caution

Oscar: AggressiveAgassiz's Dwarf Cichlid: Semi-Aggressive

Oscar & Amano Shrimp

Astronotus ocellatus · Caridina multidentata

🔴Not Recommended

Oscar: AggressiveAmano Shrimp: Peaceful

Oscar & Amazon Leaf Fish

Astronotus ocellatus · Monocirrhus polyacanthus

🟡Possible with Caution

Oscar: AggressiveAmazon Leaf Fish: Peaceful

Oscar & Amazon Puffer

Astronotus ocellatus · Colomesus asellus

🟡Possible with Caution

Oscar: AggressiveAmazon Puffer: Mostly Peaceful

Oscar & Apple Snail

Astronotus ocellatus · Pomacea maculata

🟡Possible with Caution

Oscar: AggressiveApple Snail: Peaceful

Oscar & Assassin Snail

Astronotus ocellatus · Clea helena

🔴Not Recommended

Oscar: AggressiveAssassin Snail: Peaceful

Oscar & Auratus Cichlid (Mbuna)

Astronotus ocellatus · Melanochromis auratus

🔴Not Recommended

Oscar: AggressiveAuratus Cichlid (Mbuna): Highly Aggressive

Oscar & Bala Shark

Astronotus ocellatus · Balantiocheilos melanopterus

🟡Possible with Caution

Oscar: AggressiveBala Shark: Mostly Peaceful

Oscar & Bamboo Shrimp

Astronotus ocellatus · Atyopsis moluccensis

🟡Possible with Caution

Oscar: AggressiveBamboo Shrimp: Peaceful

Oscar & Banded Archerfish (Brackish)

Astronotus ocellatus · Toxotes jaculatrix

🔴Not Recommended

Oscar: AggressiveBanded Archerfish (Brackish): Semi-Aggressive

Oscar & Beckford's Pencilfish

Astronotus ocellatus · Nannostomus beckfordi

🔴Not Recommended

Oscar: AggressiveBeckford's Pencilfish: Peaceful

Oscar & Bee Shrimp (Crystal Red / Black)

Astronotus ocellatus · Caridina cantonensis

🔴Not Recommended

Oscar: AggressiveBee Shrimp (Crystal Red / Black): Peaceful

Oscar & Betta (Siamese Fighting Fish)

Astronotus ocellatus · Betta splendens

🟡Possible with Caution

Oscar: AggressiveBetta (Siamese Fighting Fish): Semi-Aggressive

Oscar & Black Ghost Knifefish

Astronotus ocellatus · Apteronotus albifrons

🟡Possible with Caution

Oscar: AggressiveBlack Ghost Knifefish: Semi-Aggressive

Oscar & Black Neon Tetra

Astronotus ocellatus · Hyphessobrycon herbertaxelrodi

🔴Not Recommended

Oscar: AggressiveBlack Neon Tetra: Peaceful

Oscar & Black Pacu

Astronotus ocellatus · Colossoma macropomum

🟡Possible with Caution

Oscar: AggressiveBlack Pacu: Mostly Peaceful

Oscar & Black Skirt Tetra

Astronotus ocellatus · Gymnocorymbus ternetzi

🟡Possible with Caution

Oscar: AggressiveBlack Skirt Tetra: Mostly Peaceful

Oscar & Bladder Snail (Pest Snail)

Astronotus ocellatus · Physella acuta

🔴Not Recommended

Oscar: AggressiveBladder Snail (Pest Snail): Peaceful

Oscar & Bleeding Heart Tetra

Astronotus ocellatus · Hyphessobrycon erythrostigma

🟡Possible with Caution

Oscar: AggressiveBleeding Heart Tetra: Peaceful

Oscar & Blind Cave Tetra

Astronotus ocellatus · Astyanax mexicanus

🟡Possible with Caution

Oscar: AggressiveBlind Cave Tetra: Mostly Peaceful