Species description

Care, breeding and tankmates

Fish profile

Temperament

Territorial

This fish possesses an active, curious, and extremely strong nature, to the point of being able to lift and flip rocks or coral fragments in search of food. They require an enormous tank with a very deep layer of fine sand (minimum 10-15 cm) where they can bury themselves completely. Adults tend to become highly territorial and intolerant of conspecifics and other wrasses.

Diet

Carnivore

It is a voracious carnivorous predator equipped with strong jaws capable of crushing the shells of the hardest invertebrates. In the aquarium, its diet must include abundant fresh or frozen foods such as whole crustaceans, shrimp, crabs, sea urchins, clams, and mussels. They also accept large vitamin-enriched pellets to sustain their energy needs.

Sex ratio

Solitary

Single

Feeding frequency

TWO_THREE_DAILY

Juveniles require small, frequent meals up to 3 times daily, while adult specimens can be fed twice daily with more substantial portions. Regular feeding is essential to limit their natural propensity to actively hunt any life in the tank. It is important to avoid releasing excess food to prevent compromising the physical parameters of the water.

Bioload

The clown coris creates a substantial bioload, particularly as it transitions from its small juvenile phase into a massive, robust adult. They are aggressive eaters that require large amounts of meaty foods to sustain their rapid growth and high energy levels. Furthermore, their constant overturning of rocks and substrate can stir up trapped detritus, placing an extra burden on mechanical filtration. A powerful protein skimmer, strong water flow, and aggressive biological filtration are required to maintain pristine water quality.

Flow

Strong

They prefer moderate to very strong marine currents, simulating reef-lagoon transition zones and wave-swept outer reefs. A vigorous flow supports proper oxygenation and encourages their active behavior as tireless swimmers. The setup must include powerful wavemakers capable of recreating a realistic barrier reef environment.

Jump risk

Yes

This species poses a very high jump risk, a trait common to almost all members of the wrasse family. When frightened, startled by turning lights, or harassed by other fish, their immediate instinct is to violently propel themselves upward. A heavy-duty, tightly fitted mesh lid or a solid canopy is non-negotiable for their enclosure. Given their large adult size and power, flimsy covers can easily be knocked aside, so robust securing mechanisms are necessary.

Reproduction

Oviparous

They are protogynous hermaphrodites where dominant females transform into males that develop a prominent frontal hump with age. Breeding in the wild occurs through pelagic spawning in large groups or pairs, dispersing eggs into the water column. No cases of successful breeding are known in private aquariums due to the massive size of the adults.

Compatibility & tankmates

Community

Absolutely incompatible with reef or coral aquariums due to their destructive diet regarding invertebrates. They can only coexist with monumentally sized marine fish of aggressive or semi-aggressive temperament, such as large triggerfish, groupers, moray eels, or large tangs. Small, slow, or timid fish would be quickly hunted or severely harassed.

Tank level

Middle/Bottom

The clown coris is highly active across the lower and middle levels of the aquarium, with a profound connection to the substrate. They spend their days constantly patrolling the rockwork and aggressively digging through the sandbed in search of buried invertebrates. At night, or when deeply frightened, they require a deep sandbed to completely bury themselves for protection and sleep. While they may swim upward during feeding time, their primary zone of activity is fundamentally tied to the bottom structure.