03 9354 5843


The Lawnmower Blenny is suited for the beginner aquarist. It is a peaceful species and is referred to a lawnmower for its algae eating behaviours. Its colours consist of brown, green and cream spots and bands which helps them to blend into reef substrate.  

This species is native to many areas within the Indo-Pacific region.


Features of Lawnmower Blenny:

  • Grow up to 13cm
  • Care level: Easy
  • Peaceful
  • Reef Safe
  • Great tank cleaners


Tank Mate Compatibility:

Here’s a list of some of the best tank mates for your Lawnmower Blenny:

  • Butterflies
  • Clownfish
  • Damsels
  • Many other peaceful fish

They are a good match with current-loving corals, Green Star Polyps and Acropora. Lawnmower Blennies are peaceful fish but have been known to pick at smaller gobies, dart fish and other Blennies.



Lawnmower Blennies are herbivores so their diet should consist of vegetable matter including frozen and dried marine and blue-green algae. Blennies will feed off algae in the tank so incorporating mature live rock with algae growth is recommended.




Lawnmower Blennies require a minimum tank size of 200L. They are not active swimmers but they do require large areas to graze on.

After an Aquarium for your fish? Browse our Aquarium Tank Selection here.


Lawnmower Blennies prefer water temperatures between 22°C - 27°C.

Looking for a Heater for your fish? Check all available Tank Heater here.


Replicate natural conditions with artificial lighting (8-10 hours of light every 24 hours.)

Need An Aquarium Light for your tank? Browse our Fish Tank Aquarium Lighting

Filtration & Water Movement:

Lawnmower Blennies require good filtration and water quality. They enjoy high levels of current, which helps oxygenate the water. Consider keeping with a strong powerhead.

Explore aquarium filtration products here.


Incorporate sand and rocks or crushed aragonite substrate. Replicate reef habitats and boost biological filtration with coral sand.

View our range of aquarium substrates here.


Decorations for Lawnmower Blenny:

Lawnmower Blennies require lots of live rock as they “mow” the algae growths. Include rocks and corals for Blennies to hop and perch from.

View our large range of aquarium decorations here.

Additional Information

Other customers have purchased

Fish Keeping Snapshot :

Preferred Water Parameters :