🐠 Bicolor Blenny (Ecsenius bicolor)
A Dark Front Half Transitioning Into Vivid Orange • An Expressive, Near-Constantly Visible Personality • An Active Algae Grazer
 
📋 The Bicolor Blenny is a compact, characterful marine fish prized for its striking two-tone colouration, a dark brown to black front half transitioning into a vivid orange rear half, paired with an expressive face and near-constant perching, darting activity.
It comes from shallow reef flats and lagoons across the Indo-Pacific, from East Africa through Southeast Asia to parts of the Pacific islands, typically found perched on rock and rubble, darting into crevices at the first sign of danger. Every Bicolor Blenny we ship is feeding well.
Naturally active and food-driven, this species spends much of its day grazing algae from rock and glass while frequently perching in the open to survey its territory, making it one of the more consistently visible reef fish in a well-decorated tank. It's generally peaceful toward unrelated species but can become territorial toward other blennies of similar shape, and like most blennies it benefits from a tank with some established algae growth alongside supplemental feeding. It's fully reef safe, and compatible with corals and most reef invertebrates. It reaches up to 10cm, so a 75L tank suits it well.
 
💡 Highlights
🎨 Striking Two-Tone Body: Dark front half transitioning sharply into vivid orange
🐟 Active, Perching Personality: Frequently visible, darting between rockwork and glass
🧠 Beginner Friendly: Hardy and adaptable once settled
🌿 Fully Reef Safe: Compatible with corals and most reef invertebrates
✨ An Algae Grazer: Contributes to natural algae control alongside its striking looks