CompatibilityHow Many Schooling Fish Should You Keep Together?Keep enough schooling fish for the species to express normal social behavior, but choose the number only after the adult group fits the aquarium. Six is a…Compatibility
Aquarium Compatibility: Tank Mates and Stocking Decisions
Evaluate the conditions behind a pairing instead of relying on a yes-or-no chart.
Two species can share a water range and still fail as tank mates. Adult size, social group, territory, predation, feeding speed, sex ratio, introduction order, and escape space all change the outcome, so each compatibility decision states the conditions that must remain true.

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CompatibilityHow Many Schooling Fish Should You Keep Together?Keep enough schooling fish for the species to express normal social behavior, but choose the number only after the adult group fits the aquarium. Six is a…Helpful resources
