Lawnmower Blenny
Transform Your Tank with Nature's Most Diligent Algae Crew
Looking for a hardworking reef tank ally... The Lawnmower Blenny is one of the saltwater aquarium hobby's most beloved and practical additions — a species that earns its keep every single day. With expressive, periscope-like eyes, a mottled brown-and-white pattern that mimics live rock perfectly, and an unmistakable personality, this specimen is as visually engaging as it is functional. It's the rare combination of utility and character that keeps experienced aquarists coming back for one in every build.
Reaching up to 5 inches at full maturity, the Lawnmower Blenny spends its days grazing methodically across rockwork and glass, cropping filamentous and hair algae with remarkable efficiency. It perches, darts, and hops across the aquascape with a curious, almost comical energy that makes it a constant source of activity in the home aquarium. For aquarists who want a specimen that genuinely interacts with its environment — and solves a real problem while doing it — this species delivers every time.
QUICK STATS & CARE GUIDE
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Common Name: Lawnmower Blenny (Jeweled Blenny, Sailfin Blenny)
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Current Size: 2–3 inches (juvenile to sub-adult)
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Care Level: Easy — ideal for beginner to intermediate reef keepers
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Temperament: Peaceful; may show aggression toward other blennies or similar bottom-dwelling species
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Diet: Primarily herbivorous — grazes on microalgae, spirulina-based prepared foods, and algae sheets (nori); supplement if natural algae is insufficient
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Reef Safe: Yes — with caution in low-nutrient systems where algae is scarce, as it may nip at coral polyps when underfed
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Water Conditions: 72–78°F | Salinity 1.023–1.025 | pH 8.1–8.4 | Nitrates below 20 ppm
WHY BUY FROM THE CORAL BOUTIQUE?
Every Lawnmower Blenny we ship from The Coral Boutique is ethically sourced, individually quarantined, and fully conditioned — eating prepared foods confidently before it ever leaves our facility. When you buy a Lawnmower Blenny online through us, you're getting a specimen that's healthy, acclimated, and ready to thrive in your saltwater tank from day one.
