The Ecsenius bicolor, with its three distinct color phases, is a favorite among aquarists. The Blenniidae family consists of over 300 species of small, agile, bottom-dwelling fishes, most of which are herbivores. For species whose reproductive habits are known, they lay demersal eggs which are guarded by the male parent.
Details
§ 01
size
Max. 11 cm
color
Variable. The common pattern is bluish black on head and another half of body, yellow behind.
order
Perciformes
family
Blenniidae
habitat and biology
Frequently seen taking refuge on corals and rocks in cracks and crevices at depths of up to 21 m.
distinctive characters
The dorsal fin has 12 spines and 16-18 rays, the anal fin has 2 spines and 18-20 rays, the caudal fin is segmented with 14 rays, and there is a cirrus on both the anterior and posterior rim of the nostril.