Fish Compatibility Guide

Find out which freshwater fish can live together. Select a species below to view its compatibility with every other fish in our database, including tank size requirements, water parameter overlap, and temperament assessments.

Showing 1 - 24 of 736 Fish Species

Kabia rainbowfish

Glossolepis kabia

Rainbowfish
10 cm Peaceful

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Abei Puffer

Pao abei

Puffers
10.5 cm Highly Aggressive

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Achara Catfish

Leiarius marmoratus

Catfish
80 cm Semi-Aggressive

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Adolfo Cory

Corydoras adolfoi

Catfish
6 cm Peaceful

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Adonis Pleco

Acanthicus adonis

Catfish
100 cm Aggressive

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Aequidens Jenaro Herrera

Aequidens sp. 'Jenaro Herrera'

Cichlids - South American
18 cm Semi-Aggressive

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Aequidens diadema (Diadem Cichlid)

Aequidens diadema

Cichlids - South American
15 cm Semi-Aggressive

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Aequidens sp. Atabapo

Aequidens sp. Atabapo

Cichlids - South American
15 cm Semi-Aggressive

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Afra Cichlid

Cynotilapia afra

Cichlids - African
10 cm Aggressive

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African Arowana

Heterotis niloticus

Oddballs
100 cm Mostly Peaceful

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African Butterfly Cichlid

Anomalochromis thomasi

Cichlids - African
7.5 cm Mostly Peaceful

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African Butterfly Fish

Pantodon buchholzi

Oddballs
12 cm Semi-Aggressive

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African Clawed Frog

Xenopus laevis

Other
12 cm Aggressive

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African Dwarf Frog

Hymenochirus boettgeri

Other
4 cm Peaceful

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African Jewel Cichlid

Hemichromis bimaculatus

Cichlids - African
14 cm Aggressive

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African Knifefish

Xenomystus nigri

Oddballs
30 cm Semi-Aggressive

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African Lungfish

Protopterus annectens

Oddballs
100 cm Highly Aggressive

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African Pike

Hepsetus odoe

Characins
30 cm Aggressive

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African Pipefish

Enneacampus ansorgii

Oddballs
14 cm Peaceful

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Agassiz Cory

Corydoras agassizii

Catfish
6.5 cm Peaceful

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Agassiz's Dwarf Cichlid

Apistogramma agassizii

Cichlids - South American
7.5 cm Semi-Aggressive

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Ajamaru Rainbowfish

Melanotaenia ajamaruensis

Rainbowfish
11 cm Peaceful

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Allen's Rainbowfish

Chilatherina alleni

Rainbowfish
10 cm Peaceful

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Alligator Gar

Atractosteus spatula

Oddballs
200 cm Aggressive

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