Tank setup
A minimum 800L aquarium suits Gem Tang. Match décor to natural behaviour — plants, rockwork, or open swimming room as needed.
Temperature
24° - 27 °C
Max size
22 cm
Min tank
800 L
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What to know before you buy.
A jet-black tang flecked with white spots, among the most prized and expensive marine fish. Reef safe, needs strong flow, pristine water and a large mature system.
Select a tank to see how this species fits.
Everything you need to keep Gem Tang healthy in a South African setup.
A minimum 800L aquarium suits Gem Tang. Match décor to natural behaviour — plants, rockwork, or open swimming room as needed.
Keep pH 8.1–8.4 and 24–27°C. Stable parameters matter more than chasing perfect numbers — acclimate new arrivals slowly.
Gem Tang is herbivore — algae, nori, prepared foods. Feed a varied diet appropriate for saltwater fish — quality flakes, pellets, or frozen foods sized to the mouth.
Gem Tang is generally semi-aggressive toward other tangs. Observe during feeding and at lights-out for true temperament.
Pair with similarly sized semi-aggressive toward other tangs tankmates in saltwater fish. Avoid fin-nippers or species that outgrow this fish.
Breeding notes for Gem Tang vary by line and water chemistry — ask your local shop about proven pairs in SA.
From hobbyists across SA.
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Species that typically work alongside Gem Tang in a similar setup.
Kole Tang
Ctenochaetus strigosus
Purple Tang
Zebrasoma xanthurum
Blue Tang
Paracanthurus hepatus
Powder Blue Tang
Acanthurus leucosternon
Powder Brown Tang
Acanthurus japonicus
Chevron Tang
Ctenochaetus hawaiiensis
Yellow Tang
Zebrasoma flavescens
Clown Tang
Acanthurus lineatus