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Red Shoulder Wrasse (Stethojulis bandanensis)

Red Shoulder Wrasse

Stethojulis bandanensis
Family
Wrasse / Labridae
Care level
Beginner
Temperament
Peaceful
Reef safe
Reef safe with caution
Max size
12 cm
Min tank
250 L · 66 gal
Origin
Indo-Pacific
Diet
Carnivore
Food
Mysis, Brine shrimp, Marine pellets, Frozen carnivore blends

Overview

The Red Shoulder Wrasse is an attractive fish with a blue-green body accented by a distinctive red-orange patch behind the pectoral fin, giving it its common name. It's a hardy, active species that also provides useful pest control by hunting small nuisance invertebrates such as pest flatworms and bristleworms.

It's an easy feeder and adapts well to aquarium life, making it a good choice for keepers wanting an active wrasse with genuine pest-hunting value.

A soft, sufficiently deep sand bed is essential for this species' wellbeing, since sand-diving at night or when startled is a core natural behaviour rather than an occasional quirk.

Compatibility

Red Shoulder Wrasses are peaceful toward fish tankmates and generally coexist well with a wide range of community species. They can occasionally prey on small invertebrates like ornamental shrimp or snails, so this species is rated reef safe with caution.

They are not aggressive toward other fish and mix well with tangs, angelfish, and other peaceful to semi-aggressive tankmates.

Health & quarantine

This is a hardy, adaptable species with few chronic health issues, though a sufficiently deep, soft sand bed is essential for its wellbeing given its sand-diving habit. A standard quarantine period of two to four weeks is recommended, and this species generally acclimates and feeds well with minimal issues.

Frequently asked questions

Why does my Red Shoulder Wrasse vanish into the sand?
This is completely natural behaviour — it dives into the sand bed at night or when startled, a defensive habit shared by many wrasses in this family.
Is the Red Shoulder Wrasse reef safe?
Rated reef safe with caution — it won't touch coral but may prey on small invertebrates like ornamental shrimp or snails.
What sand bed does this wrasse need?
A soft, sufficiently deep sand bed is essential, since diving into sand is a core natural behaviour for this species.
How big does a Red Shoulder Wrasse get?
Up to around 12cm, requiring a moderately sized tank.
Is the Red Shoulder Wrasse good for pest control?
Yes, it will actively hunt small nuisance invertebrates, adding a useful pest-control benefit.

Care guidance is drawn from our own experience — every fish is an individual, so treat it as a starting point, not a guarantee. Not sure if a species suits your tank? Come ask us in store. New to the terms? Read the care-terms glossary.