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

Showing 289 - 312 of 735 Tank Mates

Oscar & Freshwater Barracuda

Astronotus ocellatus · Ctenolucius hujeta

Possible with Caution

Oscar: AggressiveFreshwater Barracuda: Semi-Aggressive

Oscar & Freshwater Flounder

Astronotus ocellatus · Trinectes maculatus

Oscar & Freshwater Harlequin Shrimp (Sulawesi)

Astronotus ocellatus · Caridina cf. spongicola

Oscar & Freshwater Shark (Wallago)

Astronotus ocellatus · Wallago attu

Possible with Caution

Oscar: AggressiveFreshwater Shark (Wallago): Highly Aggressive

Oscar & Freshwater Sole

Astronotus ocellatus · Brachirus selheimi

Possible with Caution

Oscar: AggressiveFreshwater Sole: Mostly Peaceful

Oscar & Freshwater Toadfish (Prehistoric Monster Fish)

Astronotus ocellatus · Thalassophryne amazonica

Possible with Caution

Oscar: AggressiveFreshwater Toadfish (Prehistoric Monster Fish): Aggressive

Oscar & Frogmouth Catfish

Astronotus ocellatus · Chaca chaca

Possible with Caution

Oscar: AggressiveFrogmouth Catfish: Aggressive

Oscar & Frontosa

Astronotus ocellatus · Cyphotilapia frontosa

Oscar & Fuelleborn's Cichlid

Astronotus ocellatus · Labeotropheus fuelleborni

Oscar & Gangetic Leaf Fish

Astronotus ocellatus · Nandus nandus

Possible with Caution

Oscar: AggressiveGangetic Leaf Fish: Aggressive

Oscar & Gardner's Killifish

Astronotus ocellatus · Fundulopanchax gardneri

Possible with Caution

Oscar: AggressiveGardner's Killifish: Mostly Peaceful

Oscar & Garnet Tetra

Astronotus ocellatus · Hemigrammus pulcher

Not Recommended

Oscar: AggressiveGarnet Tetra: Peaceful

Oscar & Geophagus Orange Head Tapajos

Astronotus ocellatus · Geophagus sp. 'Orange Head'

Possible with Caution

Oscar: AggressiveGeophagus Orange Head Tapajos: Mostly Peaceful

Oscar & German Blue Ram

Astronotus ocellatus · Mikrogeophagus ramirezi

Possible with Caution

Oscar: AggressiveGerman Blue Ram: Mostly Peaceful

Oscar & Gertrude's Spotted Blue-eye

Astronotus ocellatus · Pseudomugil gertrudae

Oscar & Ghost Shrimp

Astronotus ocellatus · Palaemonetes paludosus

Not Recommended

Oscar: AggressiveGhost Shrimp: Peaceful

Oscar & Giant Danio

Astronotus ocellatus · Devario aequipinnatus

Possible with Caution

Oscar: AggressiveGiant Danio: Mostly Peaceful

Oscar & Giant Gourami

Astronotus ocellatus · Osphronemus goramy

Possible with Caution

Oscar: AggressiveGiant Gourami: Semi-Aggressive

Oscar & Giant Whiptail Catfish

Astronotus ocellatus · Proloricaria prolixa

Possible with Caution

Oscar: AggressiveGiant Whiptail Catfish: Peaceful

Oscar & Glass Bloodfin Tetra

Astronotus ocellatus · Prionobrama filigera

Possible with Caution

Oscar: AggressiveGlass Bloodfin Tetra: Peaceful

Oscar & Glass Catfish

Astronotus ocellatus · Kryptopterus vitreolus

Possible with Caution

Oscar: AggressiveGlass Catfish: Peaceful

Oscar & Glowlight Danio

Astronotus ocellatus · Danio choprae

Oscar & Glowlight Tetra

Astronotus ocellatus · Hemigrammus erythrozonus

Oscar & Goby Pleco (Pitbull Pleco)

Astronotus ocellatus · Parotocinclus jumbo