Description

Also known as Coral Blenny, False Harptail, False Harptail Blenny, Fang Blenny, Golden Mimic Blenny, Mimic Yellowtail Fangblenny, Mimic Yellow-tailed Blenny, Poison Fangblenny, Poison Fangblenny Mimic, Sabretooth Blenny, Sabre-toothed Blenny, Yellowtail Fangblenny Mimic, Yellow-tailed Blenny.

Found singly in crevices and holes, or swimming around looking for victims to attack, over coastal lagoons and seaward reefs.
They mimic and feed from other fish by getting close then attack by biting off small pieces of tissue, mucus and scales.
They also like to eat divers!!!!
Length - 8cm
Depth - 1-30m
Widespread Western Pacific

This blenny mimics the Yellowtail Fangblenny - Meiacanthus atrodorsalis
http://www.whatsthatfish.com/fish/yellowtail-fangblenny/2325#2

Combtooth Blennies are the largest family of blennies, found in both tropical and subtropical waters and freshwater habitats, as the name suggests they have comb like teeth lining their jaws.
Sabretooth Blennies have teeth to match their name!
They can be seen darting forward to sever flesh from fishes fins. (can sometimes be seen taking a swipe at divers as well) They will then dart back into their holes out of harm's way.
Some blennies will mimic cleaner wrasses to get close enough for a nip at fish.
A few Sabretooth Blennies are venomous. Ref: https://www.fishbase.se/summary/Plagiotremus-laudandus.html