Canary Blenny (Meiacanthus oualanensis)

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Canary Blenny

Meiacanthus oualanensis.jpg
Canary Blenny

Meiacanthus oualanensis

114 Litres (30 US G.)

5.1-12.7cm (2-5 ")


8.1 - 8.4

22.2-25.6°C (72 -78 °F)

8-12 °d

1:1 M:F

Flake Foods
Other (See article)

3-8 years



Additional names

Canary Blenny, Canary Fang Blenny, Oualan Forktail Blenny

Additional scientific names

Petroscirtes oualanensis, Meiacanthus ovalauensis, Petroscirtes auratus


Fiji, Tonga


Males are usually larger than females and go through a succession of color changes when breeding.

Tank compatibility

It is reef safe and needs plenty of live rock for hunting and grazing to thrive.


Finely chopped crustacean flesh, mysis and vitamin-enriched brine shrimp as well as frozen herbivore foods.

Feeding regime

Feed twice per day.

Environment specifics

Specific gravity of 1.020-1.025, pH 8.1-8.4, dKH 8-12 and temperature 72-78F. It should be housed in an aquarium with lots of live rock so that it can hunt and graze, otherwise it will not thrive.


It is venomous and you should exercise caution when placing your hands in the tank as it may mistake your fingers for an attacker and deliver a painful bite. It is semi-aggressive.


This fish is typical Blenny in shape with a long body and large eyes positioned at the top of it's boxy head. The Canary Blenny matches its name well as the entire body is a vibrant yellow in colour with a sharply forked caudal fin.


External links