Tank cleaning & repair in Huntsville → Free overnight shipping over $199.00 Live arrival guarantee Questions? Call +1 (256) 469-8078
Lawnmower Blenny

Species photo: Denis Cheong Zylantha, CC BY-SA 4.0, via Wikimedia Commons

Saltwater Fish · Blennies

Lawnmower Blenny

Salarias fasciatus

$24.99

A tireless algae eater with a big personality. Great for tanks with hair algae.

Sold out. Check back soon, we restock weekly.

One email when it’s in stock again, nothing else. Privacy

What goes in when?
  • Live arrival guarantee
  • Ships overnight, Mon–Wed
  • Shipping $39.99 per order, free over $199.00

From our species guide

Care at a glance

  • Care levelEasy
  • Reef safeYes
  • TemperamentPeacefulPeaceful; fights its own kind and other blennies
  • Temperature72–78 °F
  • Salinity1.020–1.025 SG
  • pH8.1–8.4
  • Min tank55 gallons
  • Favorite foods
    1. Algae / biofilm on rock
    2. Nori / seaweed sheets
    3. Algae pellets
  • Max size5.5 in (14 cm)

In plain words: The Lawnmower Blenny got its name because it spends almost the whole day mowing the rocks. It scrapes off a fuzzy layer of tiny algae and crumbs using teeth shaped like a comb.

Full species guide → See its family tree

About the Lawnmower Blenny

Lawnmower blennies earn their name by grazing hair and film algae from rock all day. They are full of character and become very tame. Make sure there is enough algae, or supplement with nori, so they do not go hungry in very clean tanks.