Fin's Fish Guide
The Blacktail triplefin (Axoclinus nigricaudus) is a saltwater fish of the family Tripterygiidae that grows up to 5 cm.
Description
The Blacktail triplefin is a triplefin (Tripterygiidae) from shallow reef water of the eastern Pacific, in the Gulf of California. The species grows to about 4 cm and has a slender, brown with a dark tail body with three separate dorsal fins and large pectoral fins. As a bottom-dweller it perches on rocks, coral and in tide pools and snaps at small crustaceans and algae. The fish is harmless to humans.
Frequently asked questions
How do you recognise the Blacktail triplefin?
The Blacktail triplefin has an elongate, eel-like body and is mainly brown.
Where does the Blacktail triplefin live?
The Blacktail triplefin lives in the sea (marine waters) and is mostly found around stony or rocky ground. North America: Mexico
How big does the Blacktail triplefin get?
The Blacktail triplefin grows to a maximum of about 5 cm.
Is the Blacktail triplefin dangerous to humans?
No, the Blacktail triplefin 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.
More photos
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Axoclinus
More from the family Tripterygiidae
Want the complete picture on the Blacktail triplefin?
Point your camera at the fish and Fin names the species in seconds. Free, and the Blacktail triplefin is one of 12,519 species in the app.