Wrasses
Six line wrasse
Pseudocheilinus hexataenia
Also sold as Sixstripe wrasse, Pyjama wrasse

- Care level
- Beginner
- Adult size
- 7.6 cm in aquariums
- Minimum tank
- 114 litres
- Temperament
- Semi-aggressive
- With corals
- Reef safe
- Captive-bred
- Wild-caught (captive-bred rare)
- IUCN status
- Least Concern
How do you care for the six line wrasse?
Semi-aggressive; can bully peaceful wrasses and timid fish.
Feeding
Carnivore.
May need live food to start.
Tank and special needs
Plan for at least 114 litres of water (the care sheet says 30 US gallons). FishBase records wild fish up to 10 cm (total length); aquarium fish usually stay nearer 7.6 cm.
Rockwork; lid.
Why this care level
Hardy, but often becomes a bully; add late.
Corals and invertebrates
Small crustaceans; good pest predator.
Which tankmates suit the six line wrasse?
Avoid with fairy and flasher wrasses, firefish and dartfish in small tanks.
Suggested order in a mixed tank: add last, after the peaceful fish have settled.
More than one six line wrasse
Keep one six line wrasse: two of the same species usually fight.
Other fish
Checked against the other 59 fish in this guide, assuming a tank big enough for both. Individual fish differ, so treat this as a starting point.
Take care (9)
- Rainford's gobyBoth eat copepods from the rock; a tank under about 400 litres rarely grows enough for two.
- Red head solon fairy wrasseSix line wrasses often bully peaceful wrasses, firefish and dartfish, especially in small tanks.
- Carpenter's flasher wrasseSix line wrasses often bully peaceful wrasses, firefish and dartfish, especially in small tanks.
- Leopard wrasseBoth eat copepods from the rock; a tank under about 400 litres rarely grows enough for two.
- FirefishSix line wrasses often bully peaceful wrasses, firefish and dartfish, especially in small tanks.
- Purple firefishSix line wrasses often bully peaceful wrasses, firefish and dartfish, especially in small tanks.
- Scissortail dartfishSix line wrasses often bully peaceful wrasses, firefish and dartfish, especially in small tanks.
- Mandarin dragonetBoth eat copepods from the rock; a tank under about 400 litres rarely grows enough for two.
- Spotted mandarinBoth eat copepods from the rock; a tank under about 400 litres rarely grows enough for two.
Usually fine together (50)
- Ocellaris clownfish
- Percula clownfish
- Clark's anemonefish
- Tomato clownfish
- Maroon clownfish
- Neon goby
- Yellow clown goby
- Yellow watchman goby
- Orange spotted goby
- Hi-fin red banded goby
- Gold head sleeper goby
- Lawnmower blenny
- Bicolor blenny
- Midas blenny
- Tailspot blenny
- Striped fang blenny
- Royal dottyback
- Orchid dottyback
- Magenta dottyback
- Neon dottyback
- Banggai cardinalfish
- Pyjama cardinalfish
- Green chromis
- Yellowtail blue damsel
- Blue damsel
- Azure damsel
- Humbug damsel
- Yellow coris wrasse
- Melanurus wrasse
- Bluestreak cleaner wrasse
- Lyretail anthias
- Bartlett's anthias
- Royal gramma
- Yellow assessor
- Yellow tang
- Regal blue tang
- Kole tang
- Scopas tang
- Powder blue tang
- Coral beauty
- Flame angelfish
- Cherub angelfish
- Foxface rabbitfish
- Flame hawkfish
- Longnose hawkfish
- Falco hawkfish
- Yellowhead jawfish
- Moorish idol
- Harlequin filefish
- Copperband butterflyfish
Invertebrates
Only the invertebrates with a known risk are listed.
Avoid together (1)
- Berghia nudibranchSix line wrasse is likely to eat Berghia.
Take care (6)
- Skunk cleaner shrimpSix line wrasse may eat very small shrimp; adult skunk cleaner shrimps are usually safe.
- Peppermint shrimpSix line wrasse may eat very small shrimp; adult peppermint shrimps are usually safe.
- Camel shrimpSix line wrasse may eat very small shrimp; adult camel shrimps are usually safe.
- Tiger tail sea cucumberA stressed or dead tiger tail sea cucumber can release toxins that harm fish; cover pump intakes.
- Sea appleA stressed or dead sea apple can release toxins that harm fish; cover pump intakes.
- Harlequin shrimpSix line wrasse may eat very small shrimp; adult harlequin shrimps are usually safe.
Corals and anemones
Only the corals and anemones with a known risk are listed.
Take care (1)
- Carpet anemones (Haddon's, giant)The carpet anemones (Haddon's, giant) can catch and eat small fish such as the six line wrasse.
These checks follow the reasons fish and invertebrates clash: same species or genus, similar shape, mouth size, temperament, food, burrows, tank size and the order they are added. Individual animals differ; every source agrees on that.
Quarantine and health
Standard.
New fish are the most common way disease gets into a reef tank. Quarantine every fish in a separate tank before it joins the display, and choose a method that suits its tolerance of copper.
Captive-bred or wild?
Wild-caught.
Where sources disagree
| Topic | What sources say | Our reading |
|---|---|---|
| Minimum tank |
| The size is fine at 30 US gallons (about 114 litres). The real limit is its aggression towards peaceful wrasses. |
Other minimum tank sizes we found:
- The same page's quick stats say 60 gal while its overview says 30 gal.
What does it cost in the UK?
about £29. This is one UK retailer’s listing on 21 October 2026, not a market average, and every item was sold out on that day.
Sources
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