About

Freshwater Tank Planner answers the questions people ask before buying fish: how many fit in a tank, which can live together, and whether the tank is ready.

Who runs it

Freshwater Tank Planner is run by PLACEHOLDER (PLACEHOLDER-OPERATOR-BV). It sells nothing, has no accounts and asks for nothing. Nothing you enter leaves your browser.

How the facts are checked

Every species fact comes from a named public source, with the date it was read. Where sources disagree, the most cautious value is shown and every source's own value is listed beside it. The rules behind each verdict are on how the planner decides.

What it covers

53 freshwater species kept in home aquariums. Saltwater, brackish and pond fish are not covered, and nothing here is veterinary advice.

Found a mistake?

Write in with the species, the fact, and where you read a different value.