Description

Scientific Name: Ecsenius bicolor
Common Names: Bicolor Blenny, Two-Colored Blenny
Maximum Length: 4″
Minimum Aquarium Size: 30 Gallons
Aquarium Suitability: Generally Durable and Hardy
Diet: Herbivorous; primarily feeds on algae. Supplement with vegetable-based foods like nori, spirulina flakes, or herbivore pellets if natural algae growth is insufficient.
Reef Safe: Yes
Temperament: Peaceful; generally ignores other fish but may show territorial behavior toward similar-shaped species. Thrives in community tanks with non-aggressive tankmates.
Captive Care: The Bicolor Blenny is an easy-to-care-for species suitable for beginner to intermediate hobbyists in reef setups. Provide plenty of live rock for grazing, perching, and hiding to mimic their natural habitat. It may occasionally nibble on soft corals, so monitor in tanks with delicate specimens. Quarantine new specimens for 2–4 weeks to prevent parasitic infections like ich.

Fun Facts:
– Colorful Chameleon: Ecsenius bicolor features a striking two-tone coloration—typically orange on the front half and blue or purple on the rear—making it a visually dynamic addition to any reef tank.
– Perch Enthusiast: This blenny loves to perch on live rock or coral, often observing tank activity from elevated spots, adding a watchful and entertaining personality to your aquarium.
– Algae Controller: In the wild, these blennies help maintain reef health by grazing on algae, a behavior that translates to keeping your tank surfaces clean in captivity.
– Indo-Pacific Native: Found in shallow reefs across the Indo-Pacific, they adapt well to captive environments with ample rockwork, replicating their natural perching and foraging habits.