Fin's Fish Guide
The Blue-lined blenny (Plagiotremus rhinorhynchos) is a saltwater fish of the family Blenniidae that grows up to 12 cm.
Description
The bluestriped fangblenny is a small, elongate blenny (Blenniidae) from the Indo-West Pacific. The species reaches about 12 cm and has a blue body with orange lateral stripes; the colour can vary greatly. It inhabits clear, coral-rich parts of lagoon and seaward reefs and shelters in empty worm tubes when alarmed. With the rearward-pointing canines in its lower jaw it darts out from ambush to snatch bits of skin, mucus and sometimes scales from passing fishes. When approached it sometimes also bites divers.
Frequently asked questions
How do you recognise the Blue-lined blenny?
The Blue-lined blenny has an elongate, eel-like body, is mainly blue and shows a horizontal stripes pattern. Snaps pieces of skin and mucus off fishes from empty worm tubes; sometimes bites divers as well.
Where does the Blue-lined blenny live?
The Blue-lined blenny lives in the sea (marine waters) and is mostly found around stony or rocky ground. Indo-West Pacific, on coral-rich reefs.
How big does the Blue-lined blenny get?
The Blue-lined blenny grows to a maximum of about 12 cm. On average the species is around 8 cm.
Is the Blue-lined blenny dangerous to humans?
No, the Blue-lined blenny is harmless to humans. None required: this species is harmless to humans.
Is the Blue-lined blenny edible?
The Blue-lined blenny is not usually eaten.
More photos
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Plagiotremus
More from the family Blenniidae
Want the complete picture on the Blue-lined blenny?
Point your camera at the fish and Fin names the species in seconds. Free, and the Blue-lined blenny is one of 12,519 species in the app.