The Many-rayed threefin (Forsterygion varium) is a saltwater fish of the family Tripterygiidae that grows up to 13 cm.
Description
The variable triplefin is a triplefin from the southwest Pacific, around New Zealand. The species grows to about 13 cm and has an elongate body with three separate dorsal fins and a variable, brown-green mottled colour that lets it blend in among rock and weed. As a bottom-dweller it often perches on rocks and in tidal pools and snaps at small crustaceans and worms. The fish is harmless to humans and has no commercial value. The IUCN has not evaluated the species.
Frequently asked questions
How do you recognise the Many-rayed threefin?
The Many-rayed threefin has an elongate, eel-like body, is mainly brown and shows a marbled pattern. Three separate dorsal fins and marbled camouflage; intertidal triplefin blenny
Where does the Many-rayed threefin live?
The Many-rayed threefin lives in the sea (marine waters) and is mostly found around mixed bottom. Southwest Pacific
How big does the Many-rayed threefin get?
The Many-rayed threefin grows to a maximum of about 13 cm.
Is the Many-rayed threefin dangerous to humans?
No, the Many-rayed threefin is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.
Is the Many-rayed threefin edible?
The Many-rayed threefin is not usually eaten.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Forsterygion
More from the family Tripterygiidae

Want the complete picture on the Many-rayed threefin?
Point your camera at the fish and Fin names the species in seconds. Free, and the Many-rayed threefin is one of 12,519 species in the app.