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Hardy shoalers — and the "cycle fish" they should not be
Damsels & Chromis
Green chromis are peaceful, shimmering shoalers that belong in a group; damsels are tough and colourful but can turn genuinely aggressive with age. Neither should be used as a disposable "cycle fish" — cycle with an ammonia source instead.
1 in our library · 1 with a full care guide.
💧 The one thing to get right: Keep chromis in a group of six or more, and never cycle a tank on live fish.
Plan a damsels & chromis tank
Our free tools run on these species' real, sourced care data — no guessing:
Fish compatibility checker →Stocking calculator →Tank volume calculator →Parameter targets →