CheckMyFishTankLawnmower Blenny care
Salarias fasciatus · Saltwater · Intermediate level care
A funny algae grazer with lots of personality.
Feeding
Twice a day. A small pinch of flakes plus fresh vegetables or an algae wafer left in for a few hours. Algae sheets, spirulina flakes, algae grown on rock.
Good tank mates
Fish that pass every check with Lawnmower Blenny in a 60 gallon tank: same water, overlapping temperature, nobody gets eaten and no bullies.
Do not mix with
- Maroon Clownfish: Maroon Clownfish is aggressive and will bully peaceful Lawnmower Blenny.
- Blue Devil Damselfish: Blue Devil Damselfish is aggressive and will bully peaceful Lawnmower Blenny.
- Domino Damselfish: Domino Damselfish is aggressive and will bully peaceful Lawnmower Blenny.
- Orchid Dottyback: Orchid Dottyback is aggressive and will bully peaceful Lawnmower Blenny.
Questions
What size tank does a Lawnmower Blenny need?
At least 30 gallons. Adults grow to about 5 inches, so plan for the adult size, not the size at the store.
What temperature does a Lawnmower Blenny like?
75 to 80 degrees Fahrenheit, with a pH of about 8.1 to 8.4. A steady temperature matters more than hitting one exact number.
How many Lawnmower Blenny should I keep together?
One is fine. If you keep more, keep one male, since males fight each other.
What do Lawnmower Blenny eat?
Algae sheets, spirulina flakes, algae grown on rock. Feed twice a day: a small pinch of flakes plus fresh vegetables or an algae wafer left in for a few hours.
Sources
Checked against these sources on 2026-11-10. When sources disagree we use the safer number.