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 697 - 720 of 736 Fish Species

Waigeo Rainbowfish

Melanotaenia catherinae

Rainbowfish

10 cm Peaceful

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Walking Catfish (Clarias)

Clarias batrachus

Catfish

45 cm Aggressive

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Wami Tilapia (Redeye)

Oreochromis hornorum

Cichlids - African

30 cm Semi-Aggressive

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Warmouth

Lepomis gulosus

Other

25 cm Aggressive

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Weeksi Bichir

Polypterus weeksii

Oddballs

50 cm Semi-Aggressive

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Wels Catfish (European Catfish)

Silurus glanis

Catfish

150 cm Aggressive

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West African Bichir

Polypterus retropinnis

Oddballs

34 cm Semi-Aggressive

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Western Rainbowfish

Melanotaenia australis

Rainbowfish

10 cm Peaceful

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Whiptail Catfish

Rineloricaria sp.

Catfish

12 cm Peaceful

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Whisker Shrimp

Macrobrachium sp.

Invertebrates

7.5 cm Aggressive

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White Cheeked Goby

Rhinogobius duospilus

Gobies & Gudgeons

5 cm Mostly Peaceful

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White Cichlid

Vieja argentea

Cichlids - Central American

30 cm Aggressive

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White Cloud Mountain Minnow

Tanichthys albonubes

Cyprinids

4 cm Peaceful

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White Saum (Green Terror)

Andinoacara stalsbergi

Cichlids - South American

20 cm Aggressive

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White Top Hara (Gallireya Reef)

Cynotilapia sp. 'hara'

Cichlids - African

10 cm Aggressive

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Whiteseam Fighter

Betta albimarginata

Anabantoids

4 cm Mostly Peaceful

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Wolf Cichlid

Parachromis dovii

Cichlids - Central American

65 cm Highly Aggressive

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Wolf Fish

Hoplias malabaricus

Oddballs

50 cm Highly Aggressive

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Wrestling Halfbeak

Dermogenys pusilla

Livebearers

7 cm Mostly Peaceful

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X-Ray Tetra (Pristella)

Pristella maxillaris

Characins

5 cm Peaceful

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Xenotilapia ochrogenys

Cichlids - African

11 cm Mostly Peaceful

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Xenotilapia papilio

Cichlids - African

10 cm Semi-Aggressive

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Yellow Acara

Aequidens metae

Cichlids - South American

18 cm Semi-Aggressive

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Yellow Bullhead Catfish

Ameiurus natalis

Catfish

35 cm Semi-Aggressive

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