Gomphosus caeruleus
Source: Philippe Bourjon / CC-BY-SA-3.0
Gomphosus caeruleus
Source: Rob / CC BY 2.0
Gomphosus caeruleus
Source: JJPhoto.dk
Gomphosus caeruleus
Source: JJPhoto.dk


Latin name Gomphosus caeruleus - Lacepède, 1801
Common name Green birdmouth wrasse
Family Labridae - Gomphosus
Max length 32.0 cm (12.6")

As aquarium fish

Minimum volume 1000 l (264 gal)
Hardiness Hardy
Suitable for aquarium Suitable with care
Reef safe Reef safe with caution
Aggressiveness Might be aggressive towards similar species


  • Fish
  • Small crustaceans (Krill, mysis, artemia...)
  • Larger crustaceans (Shrimp, crabs...)
  • Other invertebrates

Jumps out of open aquaria

This species is known to jump out of open aquaria.

Can be a threat towards crustaceans etc.

This species will eat shrimps, crabs, small bivalves, snails and the like.

Can be a threat to small fish

This spicies might be a threat to smaller fishes.

Can nibble at clams

This species sometimes nibbles at clams including Tridacna species.

Requires a varied diet

This species must be fed with an appropriately varied diet.

Requires plenty of space for swimming.

This species revels in swimming and requires an aquarium with ample space.


This species can change gender from female to male.

When a male is needed, a female changes sex and takes on the role.

Hiding places

This species needs good hiding places, for example, between live rocks.

Can coexist as a pair

They can live as a pair provided they are introduced simultaneously.

Can be aggressive

This species can be aggressive when kept together with fish that are very similar, or if they are not provided with adequate space.

Genus description (Gomphosus)

Birdwrasses (Gomphusus) are so called because of their special beak-formed jaw, which they use to hunt for prey amongst rock and corals.

They eat mainly crabs, shrimps and crayfish, but also mussels, small fish and starfish are included in their natural diet. If the prey is too large to be eaten whole, these Wrasses will hit it against rocks until the pieces are of the right size.

They normally sleep between rocks.

Family description (Labridae)

Wrasses are nearly always seen in reef aquaria, since many of the species are both attractive and useful in battling a range of unwanted invertebrates like i.e. flatworms, pyramide snails.
These fish live of everything from zooplankton to large crustaceans, sea urchins and the like.

The needs and behaviour of Wrasses vary greatly, so it is vital to familiarize oneself with the specific species before buying one.


Aquarium trade Yes
Distribution Indian Ocean: East Africa south to Natal, South Africa (Ref. 4392) and east to the Andaman Sea.
English common names Indian Ocean bird wrasse, Green birdmouth wrasse, Bird wrasse, Blue green bird wrasse
Danish common names Indisk fuglegylte
German common names Schnabellippfisch
French common names Labre oiseau, Poisson oiseau

References and further reading

About references

Bob Fenner. Sociable to the Point of Exuberance! The Bird Wrasses, Genus Gomphosus - Wet Web Media - (English)
James Fatherree. 2014. A look at the Bird Wrasses (Requires subscription) - Tropical Fish Hobbyist Magazine - (English)

Scott W. Michael. 2009. Wrasses and Parrotfishes (Reef Fishes Series Book 5) - TFH Publications / Microcosm Ltd. - (English)

Froese, R. and D. Pauly. Editors. 2014. FishBase. World Wide Web electronic publication. www.fishbase.org, version (08/2014).


hermaphroditic, eats shrimp, eats crab, eats bivalve clams mussels scallops, eats snails, eats fish, pair couple, eats tridacna
Just a moment...
Just a moment...