🐠 Black Sailfin Blenny (Atrosalarias fuscus)
Marine Fish • Reef-Safe Grazer • Rock–Perch Specialist • Algae Control
 
📋 The Black Sailfin Blenny is a robust, rock-perching algae grazer with a tall sail-like dorsal fin and a deep, velvety dark body that can show subtle brown undertones. It spends much of its day grazing film and turf algae on rock surfaces and ledges, popping into crevices when startled.
Hardy and personable, this blenny brings functional value to reef systems by helping curb nuisance algae. Provide ample live rock and a mature system to support its natural grazing behavior.
 
💡 Highlights
✨ Sail-Like Dorsal Fin: Dramatic profile on a compact fish
⚪ Natural Algae Controller: Constant film/turf grazer
📏 Reef-Friendly Size: Works in small to mid-size aquariums
✅ Coral-Safe (Well Fed): Monitor in SPS-heavy tanks
🐠 Perching Personality: Engaging, visible, and active