FishCompat

Tank Mate Guide

Best Tank Mates for Oscar

Oscars need tank mates that match their 73-82F temperature range, pH 6-7.5, adult size, and aggressive temperament. Oscars need tank mates chosen around temperament, territory, and adult size. Provide line-of-sight breaks and avoid fish small enough to be swallowed.

Oscar Care Snapshot

Tank

75+ gal

pH

6-7.5

Temp

73-82F

Size

13.8 in

Temperament

Aggressive

Care

Advanced

Swim Level

Middle

Group

Solo or pair

Compatible Fish (0)

Use Caution (22)

Angelfish (Pterophyllum scalare) in a freshwater aquarium

Angelfish

Size 5.9 inpH 6.5-7.5
Bristlenose Pleco (Ancistrus cirrhosus) in a freshwater aquarium

Bristlenose Pleco

Size 5.1 inpH 6.5-7.8
Clown Loach (Chromobotia macracanthus) in a freshwater aquarium

Clown Loach

Size 11.8 inpH 6-7.5
Common Pleco (Hypostomus plecostomus) in a freshwater aquarium

Common Pleco

Size 17.7 inpH 6.5-7.8
Convict Cichlid (Amatitlania nigrofasciata) in a freshwater aquarium

Convict Cichlid

Size 5.9 inpH 6.5-8
Denison Barb (Sahyadria denisonii) in a freshwater aquarium

Denison Barb

Size 5.9 inpH 6.5-7.8
Discus (Symphysodon aequifasciatus) in a freshwater aquarium

Discus

Size 7.9 inpH 5.5-7
Electric Blue Acara (Andinoacara pulcher) in a freshwater aquarium

Electric Blue Acara

Size 5.9 inpH 6.5-7.8
Firemouth Cichlid (Thorichthys meeki) in a freshwater aquarium

Firemouth Cichlid

Size 5.9 inpH 6.5-8
Jack Dempsey (Rocio octofasciata) in a freshwater aquarium

Jack Dempsey

Size 9.8 inpH 6.5-8
Keyhole Cichlid (Cleithracara maronii) in a freshwater aquarium

Keyhole Cichlid

Size 4.7 inpH 6-7.5
Opaline Gourami (Trichopodus trichopterus) in a freshwater aquarium

Opaline Gourami

Size 5.9 inpH 6-8
Pearl Gourami (Trichopodus leerii) in a freshwater aquarium

Pearl Gourami

Size 4.7 inpH 6-7.5
Pictus Catfish (Pimelodus pictus) in a freshwater aquarium

Pictus Catfish

Size 5.1 inpH 6.5-7.5
Rainbow Shark (Epalzeorhynchos frenatum) in a freshwater aquarium

Rainbow Shark

Size 5.9 inpH 6.5-7.5
Red Tail Shark (Epalzeorhynchos bicolor) in a freshwater aquarium

Red Tail Shark

Size 5.9 inpH 6.5-7.5
Rosy Barb (Pethia conchonius) in a freshwater aquarium

Rosy Barb

Size 5.5 inpH 6-7.5
Sailfin Molly (Poecilia latipinna) in a freshwater aquarium

Sailfin Molly

Size 5.1 inpH 7.5-8.5
Severum (Heros efasciatus) in a freshwater aquarium

Severum

Size 9.8 inpH 6-7.5
Siamese Algae Eater (Crossocheilus oblongus) in a freshwater aquarium

Siamese Algae Eater

Size 5.9 inpH 6.5-7.5

Avoid These Tank Mates (57)

African Dwarf Frog (Hymenochirus boettgeri) in a freshwater aquarium

African Dwarf Frog

Size 0.8 inpH 6.5-7.8
Amano Shrimp (Caridina multidentata) in a freshwater aquarium

Amano Shrimp

Size 1.6 inpH 6.5-7.8
Apistogramma (Apistogramma cacatuoides) in a freshwater aquarium

Apistogramma

Size 3.1 inpH 5.5-7.5
Axolotl (Ambystoma mexicanum) in a freshwater aquarium

Axolotl

Size 0.4 inpH 6.8-8
Bamboo Shrimp (Atyopsis moluccensis) in a freshwater aquarium

Bamboo Shrimp

Size 1.6 inpH 6.5-7.8
Betta (Betta splendens) in a freshwater aquarium

Betta

Size 2.8 inpH 6.5-7.8
Black Neon Tetra (Hyphessobrycon herbertaxelrodi) in a freshwater aquarium

Black Neon Tetra

Size 1.6 inpH 5.5-7.5
Black Skirt Tetra (Gymnocorymbus ternetzi) in a freshwater aquarium

Black Skirt Tetra

Size 2.4 inpH 6-7.5
Boesemani Rainbowfish (Melanotaenia boesemani) in a freshwater aquarium

Boesemani Rainbowfish

Size 4.3 inpH 7-8
Bolivian Ram (Mikrogeophagus altispinosus) in a freshwater aquarium

Bolivian Ram

Size 3.1 inpH 6-7.5
Bronze Corydoras (Corydoras aeneus) in a freshwater aquarium

Bronze Corydoras

Size 2.8 inpH 6-7.5
Buenos Aires Tetra (Hyphessobrycon anisitsi) in a freshwater aquarium

Buenos Aires Tetra

Size 2.8 inpH 6.5-8
Cardinal Tetra (Paracheirodon axelrodi) in a freshwater aquarium

Cardinal Tetra

Size 2 inpH 4.8-6.8
Celestial Pearl Danio (Danio margaritatus) in a freshwater aquarium

Celestial Pearl Danio

Size 1 inpH 6.5-7.5
Cherry Barb (Puntius titteya) in a freshwater aquarium

Cherry Barb

Size 2 inpH 6-7.5
Cherry Shrimp (Neocaridina davidi) in a freshwater aquarium

Cherry Shrimp

Size 1.6 inpH 6.5-8
Chili Rasbora (Boraras brigittae) in a freshwater aquarium

Chili Rasbora

Size 0.8 inpH 5.5-7
Clown Killifish (Epiplatys annulatus) in a freshwater aquarium

Clown Killifish

Size 1.4 inpH 5.5-7
Corydoras Panda (Corydoras panda) in a freshwater aquarium

Corydoras Panda

Size 2 inpH 6-7.5
Dwarf Chain Loach (Ambastaia sidthimunki) in a freshwater aquarium

Dwarf Chain Loach

Size 2.4 inpH 6.5-7.5

Tank Setup Tips

Start with at least 75 gallons, keep water stable, and stock schooling species in proper groups. If the tank mate list includes caution species, add more plants, caves, and open swimming room before introducing them.

For a specific pair, use the compatibility checker or visit generated pair pages from the cards above. Compatibility is strongest when the aquarium is mature and each species can eat without being chased.

Back to the Oscar care guide