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Bicolor Blenny (Ecsenius bicolor)

Find Bicolor Blenny across reef-livestock retailers and from fellow hobbyists on ReefDock. Compare sources, check live pricing where available, and review source-tank parameters on Reef-Trak-verified fish listings before you buy.

Bicolor Blenny
Photo: Brian Gratwicke · CC BY 2.0
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Where to buy Bicolor Blenny

ReefDock searches the following reef retailers for this fish. Click through to see the live price.

  • Saltwaterfish

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    Search Saltwaterfish
  • Amazon

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  • Petco

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About Bicolor Blenny

The Bicolor Blenny is a small, elongated fish with a distinctive two-tone coloration: the anterior half is typically yellow or orange, while the posterior half is dark brown or black. The body is slightly compressed laterally with a blunt head and large eyes. A small cirrus (tentacle-like projection) is present above each eye.

Key facts

Feeding Schedule
2-3 times daily
Family
Blenniidae
Water Parameters
Temperature: 72-78°F pH: 8.1-8.3 Salinity: 1.02-1.025
Difficulty Level
The Bicolor Blenny is an excellent choice for beginners and established aquarists alike. It is hardy, adaptable, and does not require specialized care beyond standard reef aquarium conditions.
Care Requirements
• Minimum 20-gallon tank; larger for groups • SG 1.020–1.026, pH 8.0–8.3, temp 72–78°F • Strong water flow, well-oxygenated • Live rock, caves/crevices for shelter • Herbivorous; feed quality dried seaweed, mysis shrimp
Care Level
Easy
Temperament
Semi Aggressive
Appearance
The Bicolor Blenny is a small, elongated fish with a distinctive two-tone coloration: the anterior half is typically yellow or orange, while the posterior half is dark brown or black. The body is slightly compressed laterally with a blunt head and large eyes. A small cirrus (tentacle-like projection) is present above each eye.
Reef safety
Reef Safe
Min tank size
20 gallons
Diet
omnivore
Origin
Indo-Pacific region, ranging from the Red Sea and East Africa through the Indo-Pacific to Hawaii and French Polynesia, typically found in shallow coral reef environments and rocky areas.

Looking for a hobbyist seller?

ReefDock's marketplace lets reef-keepers sell fish directly to other reef-keepers with Stripe-secured checkout and live-arrival photo confirmation. Browse current fish listings on ReefDock, or list your own.

Verify the source tank before you buy

ReefDock is the sister app to Reef Trak. Sellers who maintain a Reef Trak tank log can publish source-tank parameters on eligible fish listings — so you can see the conditions a fish was raised in before you buy. Log this fish on Reef Trak.

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