Six Line Wrasse
Pseudocheilinus hexataenia
A small, fast, reef-safe wrasse valued for eating flatworms and pyramidellid snails, but increasingly territorial with age.
Ideal Conditions
- Temperature
- 23 – 27 °C
- pH range
- 8.1 – 8.4
- Salinity
- 1.023 – 1.026 SG
- Adult size
- 7 – 8 cm
- Min. tank size
- 120 litres+
- Lifespan
- 4 – 8 years
- Diet
- Carnivore — small crustaceans, mysis and pellets
- Water flow
- Moderate
- Preferred setup
- Reef aquarium with dense rockwork and a secure lid
About the Six Line Wrasse
Six Line Wrasses are hardy, colourful and useful: they hunt small pests across rockwork all day. The trade-off is temperament — mature individuals often harass newly added fish, so they are usually added last.
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Where Six Line Wrasse comes from
Native range
Indo-Pacific, Red Sea to central Pacific
Countries / regions
Indonesia, Fiji, Egypt, Australia
Habitat
Coral-rich reef slopes with dense branching cover.
Illustrative native range only, not an occurrence dataset.
Similar species
Melanurus Wrasse
Halichoeres melanurus
Royal Gramma
Gramma loreto
We’re adding more full species guides as the catalogue grows.
Compatible tank mates
Reviewed guidance based on this species' recorded traits.
- Great
Yellow Tang
Zebrasoma flavescens
Different diet and swimming space, and large enough to be untroubled by the wrasse.
- Compatible with caution
Royal Gramma
Gramma loreto
Both can be territorial in mid-sized tanks; add the gramma first and provide separate rockwork.
- Not recommended
Mandarin Dragonet
Synchiropus splendidus
The wrasse out-competes a mandarin for copepods and can starve it.
- Compatible with caution
Cleaner Shrimp
Lysmata amboinensis
Large cleaner shrimp are usually safe, but small ornamental shrimp are hunted.
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