Imposter fangblenny (Plagiotremus phenax) is a species of combtooth blenny found in coral reefs in the Indian ocean.
Short description - Dorsal spines (total): 7 - 8; Dorsal soft rays (total): 27-29; Anal spines: 2; Anal soft rays: 20 - 23. Pale grey body, dorsal fin with black submarginal stripe. Pectoral rays typically 12; large curved canine tooth posteriorly on side of lower jaw; interorbital pores 1-2; body depth about 8.0 in SL. Maximum size to 5.1 cm TL.
Max length : 8.0 cm TL male/unsexed.
Imposter fangblenny habitat
This species is found on coastal, lagoon and outer reefs to 10 m. This species is reef-associated, and often hovers above the reef waiting for unwary prey. It attacks other fishes to remove scales and skin tissue (stomach contents typically contain only mucous and a few fish scales).
It is a mimic of Meiacanthus smithi (Smith-Vaniz 1976, 1987).