Depth
Coris · Bony Fish

Rainbow Wrasse

Coris julis

0-40m
Depth Range
Variable
Max Size
Mediterranean
Distribution
0-40m
Depth Range
Variable
Max Size
Reef & Open
Habitat
Carnivore
Diet
Solitary
Social
LC
IUCN Status
Very High
Sighting Likelihood
Kingdom Animalia
Phylum Chordata
Class Actinopterygii
Genus Coris
Species julis

Bony Fish

Identification & Biology

  • IdentificationSmall, elongated wrasse with spectacular colour variation between sexes. Males have a zigzag orange stripe along the body with blue-green back and white belly. Females and juveniles are brown with a pale lateral stripe.
  • SizeUp to 25 cm total length, commonly 10 to 18 cm.
  • Social HabitActive and social, often seen in loose groups swimming rapidly over rocky reefs. Males patrol territories.
  • HabitatRocky reefs, seagrass beds, and mixed substrates. One of the most commonly seen reef fish in the Mediterranean.
  • Depth1 to 120 m, most common between 3 and 30 m.
  • Feeds OnSmall crustaceans, molluscs, worms, and other invertebrates. Also acts as a cleaner fish for larger species.
  • DistributionEastern Atlantic from the British Isles to West Africa, including the entire Mediterranean Sea.
  • DescriptionThe most abundant and familiar wrasse in the Mediterranean. Rainbow wrasse are a constant, energetic presence on every rocky dive, zipping across the reef in search of food. Males are strikingly coloured with orange zigzag markings. A protogynous hermaphrodite, with a dramatic colour change when transitioning from female to male.

Range

Habitat & Distribution

Found across the Mediterranean, inhabiting reef & open environments. Active from the surface down to 40m depth.

Where Malta divers have spotted this species

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Sightings are logged by divers using our What Did You See? dive-log tool. View the full live sightings map.

Detail

Preferred Environment

Reef & Open habitats, typically at depths of 0-40m. Most commonly encountered by divers at the shallower end of its range.

Encounter Tips

Best approached slowly and calmly. Avoid casting shadows directly over the animal. Neutral buoyancy and patience increase encounter success significantly.

Rainbow Wrasse species card

Biology

Behaviour & Diet

Feeding Strategy

An opportunistic feeder that consumes small crustaceans, worms, molluscs and echinoderm fragments gleaned from rocky and sandy substrates.

Omnivore

Reproduction

A protogynous hermaphrodite: all fish begin as drab females and dominant individuals transform into brilliantly coloured males. Spawns pelagic eggs in summer.

Hermaphrodite

Behaviour & Defence

Buries itself completely in sand at night and when alarmed, vanishing from view within a second.

Sand burial

Dive with diveshack

Where to Encounter in Malta

The following dive sites offer strong habitat match for Coris julis. All are accessible on a guided dive with diveshack.

5-30m
North Malta

Cirkewwa

Rocky reef with caves, arches and ledges hosting a rich diversity of reef species.

View dive site ›
5-50m
Gozo

Blue Hole

One of the Med's most famous reef dive sites. Rocky walls and archways covered in life.

View dive site ›
18-36m
South Malta

Um El Faroud

The wreck lies on a sandy bottom surrounded by rocky reef -- a diverse habitat attracting reef species.

View dive site ›
IUCN Red List Least Concern

Conservation Status

This species is assessed as Least Concern on the IUCN Red List. Mediterranean populations face ongoing pressure from fishing activity, habitat degradation, and climate-driven changes to prey availability.

Source: iNaturalist Guide #888
by Lesley Clements (CC BY-SA)
diveshack Mediterranean Marine Life guide