Bicolor blenny(Ecsenius bicolor) is a blenny from the Indo-Pacific.
Short description - Dorsal spines (total): 11 - 12; Dorsal soft rays (total): 15-18; Anal spines: 2; Anal soft rays: 17 - 21. Occurs in three color phases: one black anteriorly and yellow posteriorly (bicolor phase), the others black dorsally with a broad white lateral band and dusky belly with or without a yellow tail.
Max length - 11.0 cm TL male/unsexed.
Bicolor blenny habitat
This species inhabits clear lagoons and seaward reefs with mixed corals and algae-covered rocks. It has commonly been collected from depths between 1 and 12 m.
For most species of Ecsenius, juveniles and adults are almost entirely restricted to subtidal habitats with living coral. Little information is available on the reproductive habits and the early life history of species of this genus (Springer 1988). However, Wickler (1965) observed reproduction of this species in aquaria. Newborn larvae were 3.5 mm TL.