Bicolor Blenny (Ecsenius bicolor)

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Bicolor Blenny

Bicolor Blenny

Ecsenius bicolor

114 Litres (30 US G.)

8.9-10.2cm (3.5-4 ")


8.1 - 8.4

22.2-25.6°C (72 -78 °F)

8-12 °d

1:1 M:F

Flake Foods
Other (See article)

3-8 years



Tank compatibility[edit]

Stays at the bottom most of the time. Likes to "park" on rock work and corals. May dig holes in substrate.


Omnivore; the Bicolor Blenny chops algae from rockwork like other Blennies, and eats flake and pellet foods as well. They also accept the occasional meaty food such as brine shrimp, mysis shrimp, or bloodworms. They will greedily devour nori sheets clamped in the tank.

Feeding regime[edit]

Once a day is plenty.


Remarkably docile, even timid. Will find a hole in the rock work to use as a home; when frightened, it will retreat into the hole with its head facing outward.
Very social; develops relationships with tank mates, and may even follow them around.
Blennys like to make holes their home, that being said they sometimes decide that the nice coco worm you own is a better home than the holes in the rock work.


This fish is distinctive Blenny in shape with a long body with large eyes position at the top of it's boxy head. The dorsal fin extends right down the body to the caudal and the pectoral fins are used to prop itself up. The body is deep dark blue in colour which gradually fades to bright orange to the caudal fin.


External links[edit]