🐠 Bicolor Blenny (Ecsenius bicolor)
🐠 Bicolor Blenny (Ecsenius bicolor)
Marine Fish • Reef Safe • Algae Grazer • Peaceful Community Fish
📋 The Bicolor Blenny (Ecsenius bicolor) is a beloved reef-safe species celebrated for its striking two-tone coloration — a dark front half blending into a brilliant orange-gold or yellow rear.
Active and curious, it perches on rocks and corals while constantly grazing on algae, helping maintain a clean reef system naturally.This hardy fish adapts well to most marine aquariums and coexists peacefully with other non-aggressive tankmates. It’s perfect for small to medium reef setups seeking both function and visual appeal.
💡 Highlights
✨ Two-Tone Coloration: Dark front & bright golden rear
⚪ Excellent Algae Grazer: Controls film & hair algae naturally
📏 Compact & Hardy: Ideal for nano and community reefs
✅ Reef Safe: Completely coral friendly
🐠 Active Personality: Always perching & observing
🧾 A Quick Look at the Bicolor Blenny
📛 Common Name: Bicolor Blenny
🔬 Scientific Name: Ecsenius bicolor
👨👩👧 Family: Blenniidae
🌍 Origin: Indo-Pacific – Maldives to Fiji
📏 Max Size: 11 cm (≈ 4.5″)
💧 pH Range: 8.1 – 8.4
🌡️ Temperature Range: 24 – 28 °C (≈ 75 – 82 °F)
🧠 Care Level: Easy
💖 Temperament: Peaceful / Semi-territorial with similar species
🪸 Reef Safe: ✅ Excellent choice for coral tanks
🏠 Min Tank Size: 80 L (≈ 20 US gallons)
📌 Tank Level: Mid to bottom zones
🧬 Captive Bred: ❌ No
🌿 Wild Caught: ✅ Yes sustainably collected
⏳ Lifespan: 4 – 6 years
🍽️ Diet: Omnivore (algae & microfauna)
🐣 Reproduction: Egg-layer; male guards nest

















