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Big, active grazers — not nano fish
Tangs & Surgeonfish
Tangs are stunning, personable algae-grazers, and the fish most often bought for a tank that is far too small. Swimming length is a welfare need, not a luxury, and most are ich-magnets — so quarantine is non-negotiable. One tang per tank as a rule.
4 in our library · 4 with a full care guide.
💧 The one thing to get right: Give them real open swimming length, quarantine every one (ich-prone), and keep a single tang per tank.
- Blue TangParacanthurus hepatusAdvanced✓ Care guide"Dory" — stunning, but grows big and needs a large, mature tank (not a beginner fish).
- Kole TangCtenochaetus strigosusIntermediate✓ Care guideThe bristletooth "cleaner" tang — mows film algae and detritus, and fits a mid-size reef.
- Powder Blue TangAcanthurus leucosternonAdvanced✓ Care guideThe breathtaking powder-blue — and the most ich-prone, demanding tang in the hobby. Experts only.
- Yellow TangZebrasoma flavescensBeginner–Intermediate✓ Care guideThe iconic reef yellow — an active grazer that needs real swimming length.
Plan a tangs & surgeonfish tank
Our free tools run on these species' real, sourced care data — no guessing:
Fish compatibility checker →Stocking calculator →Tank volume calculator →Parameter targets →