Birdmouth Wrasse – Gomphosus caeruleus
The Birdmouth Wrasse, Gomphosus caeruleus, is a large, active and unmistakable marine wrasse, recognised for its long bird-like snout, powerful swimming style and striking adult colouration. Also known as the Green Birdmouth Wrasse, Indian Bird Wrasse or Birdnose Wrasse, this species is a bold and highly energetic reef predator that is best suited to large, mature marine aquariums with robust tank mates. It is not a small peaceful reef wrasse, and its adult size, speed and feeding behaviour mean it should be planned carefully before purchase.
Common Name:
Birdmouth Wrasse, Green Birdmouth Wrasse, Indian Bird Wrasse, Birdnose Wrasse, Bird Wrasse.
Scientific Name (Latin):
Gomphosus caeruleus
| Specimen Size | Up to 15 cm (6 inches) in length |
|---|---|
| Adult Colouration | Green with blue and yellow markings, prominent snout |
| Behavior | Active, predatory, fast-swimming, territorial in mature tanks |
| Water Conditions | Salinity: 1.020–1.025, Temperature: 24–28°C, pH: 8.1–8.4 |
FAQ
What is the typical size of a Birdmouth Wrasse when fully grown?
A Birdmouth Wrasse can grow up to 15 cm (6 inches) in length when fully mature.
Is the Birdmouth Wrasse suitable for a beginner marine aquarium?
No, the Birdmouth Wrasse is not suitable for beginner aquarists. It requires a large, mature marine aquarium with strong tank mates and careful planning due to its active and predatory nature.
What are the ideal water parameters for keeping a Birdmouth Wrasse?
Ideal water conditions include salinity between 1.020 and 1.025, temperature between 24–28°C, and pH between 8.1 and 8.4.


Chloe Coleman –
I have kept a Birdmouth Wrasse for over a year in a 180-gallon reef tank. It’s very active and adds a lot of visual interest. The fish is bold and requires plenty of space and compatible tank mates. I made sure my tank was mature and had strong fish like tangs and larger wrasses to avoid aggression. It’s not for small setups, but in a well-balanced system, it’s a striking addition.
Jennifer Dickens –
This wrasse is a true showpiece. The green color with blue and yellow highlights is impressive. It swims fast and keeps the tank lively. I only recommend it for experienced marine aquarists with large, stable tanks. Feeding is straightforward—mostly live or frozen foods. It’s not a peaceful fish, but it’s fascinating to watch.
Emily Parr –
I bought this for my reef tank, but it was too aggressive for my smaller setup. I had to remove it after a few weeks due to stress on my other fish. It’s a powerful fish that needs a large, mature environment. I would only recommend it if you have a properly sized tank and compatible tank mates.