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FishMarineIntermediate

Queen coris

Coris formosa

The Queen Coris undergoes a dramatic transformation from a bright orange juvenile to a majestic, intricately patterned adult. It demands massive aquariums, deep sand beds, and secure rock structures.

Taxonomy

Class:Actinopteri

Order:Perciformes

Family:Labridae

Subfamily:Labrinae

Genus:Coris

Species:Coris formosa

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Water Temperature

23 - 28 °C

pH Value

8.1 - 8.4

Water type

Marine

Tank level

All levels

Adult size

60 cm

Minimum tank volume

>= 800 L

Minimum group

>= 1

8 - 12 dKH

Species description

Geographical Origin and Habitat: Coris formosa is native to the tropical waters of the Indian Ocean, ranging from East Africa and the Red Sea to Sri Lanka. It primarily inhabits coral reef edges, rubble areas, and coastal lagoons with deep sandy bottoms at depths of 2 to 30 meters, where it continuously searches for food in the sand.

Taxonomy and Morphology: Belonging to the family Labridae and the genus Coris, this fish features a robust and elongated body with thick lips and strong, protruding teeth designed to crush invertebrate shells. It reaches a significant size, with adults capable of growing up to 35-40 cm in total length.

Social Behavior: Active, diurnal, and solitary. It becomes highly territorial and aggressive as it matures, especially towards other wrasses or similar-looking fish. During the day it searches for food on the bottom, often turning over rocks and shells. It burrows completely into the sand bed to sleep at night.

Coloration and Sexual Dimorphism: Displays an extraordinary color metamorphosis: juveniles are bright orange-red with large, black-edged white spots on the back (mimicking clownfish). Adults lose this look, developing a greyish-blue or olive body covered in small dark spots, with blue-green stripes on the head and a red tail.

Care, breeding and tankmates

Aquarium Setup: Requires a very large aquarium of at least 500-600 liters (approx. 130-160 gallons) for adult specimens. A soft sand bed of at least 10-12 cm deep is essential to allow natural burrowing behavior. Rockwork must be securely anchored, as the fish will actively flip rocks to find hidden prey.

Diet and Feeding: Carnivorous, specializing in hard-shelled invertebrates. In the wild, it eats mollusks, sea urchins, crabs, and snails. In captivity, feed a variety of meaty foods such as whole shrimp with shell, clams, mussels, krill, and mysis. It will also accept large high-quality sinking carnivore pellets.

Water Quality: Keep reef parameters stable: temperature 24-27°C (75-81°F), pH 8.1-8.4, and specific gravity 1.022-1.025. Powerful filtration and an efficient protein skimmer are required to handle the heavy biological load produced by this large species and to keep nitrates and phosphates low.

Compatibility and Cohabitation: Not reef-safe with mobile invertebrates, as it will quickly consume ornamental shrimps, snails, crabs, and urchins. It is compatible with large, robust fish such as tangs, triggerfish, groupers, and large angelfish. It does not harm corals, though it may disturb them while searching for food.

Aquarium Breeding: Breeding in home aquariums has not been documented due to the immense swimming space required for their courtship. In the wild, they are pelagic spawners, with males displaying to females before rising together to release their eggs and sperm into the open water column.

Risks and Diseases: They are strong jumpers, so a secure lid on the aquarium is mandatory. They can suffer mouth and skin abrasions if the sand is too coarse or sharp. Susceptible to marine ich (Cryptocaryon) if stressed by poor water conditions or if the sand bed is allowed to accumulate too much organic waste.

Geographic Origin and Distribution

Coris formosa is native to the tropical waters of the Indian Ocean, ranging from East Africa and the Red Sea to Sri Lanka. It primarily inhabits coral reef edges, rubble areas, and coastal lagoons with deep sandy bottoms at depths of 2 to 30 meters, where it continuously searches for food in the sand.

Origin

Tropical oceans and reefsAfrica and MadagascarSouth and Southeast Asia

Fish profile

Temperament: Aggressive
Diet: Carnivore
Sex ratio: Solitary
Feeding frequency: Twice daily
Bioload: These wrasses have a moderate to high bioload. They are very active and eat constantly. Efficient mechanical and biological filtration is needed.
Flow: Strong
Jump risk: Yes
Reproduction: Oviparous
Compatibility & tankmates: Not reef safe
Tank level: All levels

FishBase

Window to the official scientific data of the species

Data synced on: 06/15/2026

Scientific Parameters & Models

Trophic level: 3.8 ± 0.26 se
Resilience: Medium (1.4 - 4.4 years)
Phylogenetic uniqueness (PD50): 0.5
Bayesian Length-Weight: a = 0.00977, b = 3.07

Image gallery

Licensed images linked to the species or, when marked, to the closest representative taxon.

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Recommendations grouped by close relatives, companion choices, and similar care.

Variants and close relatives

Same atlas type, nearby scientific identity, genus, or family.

Clown wrasse

Coris aygula

Species description

Care, breeding and tankmates

Geographic Origin and Distribution

Origin

Fish profile

Scientific Parameters & Models

Image gallery

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Species description

Care, breeding and tankmates

Geographic Origin and Distribution

Origin

Fish profile

Scientific Parameters & Models

Image gallery