lawnmower/Algae blenny

The Lawnmower Blenny is one of the most practical and endearing fish you can add to a reef aquarium. Named for its tireless grazing habits, it spends its days methodically cropping hair algae, film algae, and detritus from rockwork and glass — acting as a living, breathing cleanup crew. With its mottled brown and tan patterning, large expressive eyes, and comical perching behavior, it brings as much personality to your tank as it does utility.

Care Notes:

• Tank size: 30+ gallons with ample live rock covered in natural algae growth
• Reef-safe: yes — completely safe with corals and invertebrates
• Primary diet: grazes continuously on microalgae, film algae, and hair algae; supplement with algae-based foods (nori, spirulina) if algae supply is limited
• Generally peaceful; may show mild aggression toward other blennies or similarly shaped fish
• Perches on rocks and substrate — entertaining to watch as it hops from surface to surface
• A must-have for tanks battling nuisance algae