Fishician®Diet
Herbivore/Omnivore – algae, frozen mysis, brine shrimp; grazes on microalgae
Aquarium species profile
Bicolor Blenny
Ecsenius bicolor · Indo-Pacific (Maldives, Sri Lanka, Philippines, Marshall Islands)
Minimum tank30 gal
Adult size4"
Care levelEasy
TemperamentSemi-Aggressive
Temperature72–78°F
pH range8.1–8.4
Compatible tank mates
Peaceful reef fish; one blenny per tank
Tank mates to avoid
Other blennies (territorial), similar-looking fish, very small nano fish
Care notes
Striking two-tone body — brown/blue front half, vivid orange-yellow rear half. Perches in rock holes and crevices, watching the tank with expressive eyes. Grazes on algae. Hardy and entertaining personality. Territorial with its own kind and similar species — one per tank. Reef-safe.
Check the whole aquarium. Tank size alone does not establish compatibility. Confirm adult size, water overlap, social grouping, territory, diet, and the individual animals before stocking.