Lawnmower Blenny

• ExerciseModerate

  An active swimmer that appreciates open swimming space.

• GroomingRoutine tank care

  Weekly partial water changes keep them in top shape.

• Living spaceNano-tank friendly

  Happy in a small, stable, well-filtered tank.

• Owner experienceSome experience helps

  A little know-how makes life smoother.

• Commitment4–8 years

  Plan for a long, loving relationship.

Health to watch: Ich (white spot) · Fin rot · Nutritional deficiency

The Lawnmower Blenny (Salarias fasciatus), also called the Jeweled Rockskipper, comes from the Indo-Pacific and reaches about 12-13 cm. Mottled brown and cryptic, it is a dedicated algae grazer with comb-like teeth built for scraping film and hair algae from rock and glass. House in a 115-litre (30-gallon) or larger reef tank with plenty of live rock and established algae growth, at 24-26C, salinity 1.024-1.026, pH 8.1-8.4. Because it depends on algae, tanks that are too clean must be supplemented with dried nori and herbivore preparations to prevent it from wasting away. It is reef-safe and peaceful but may squabble with other blennies or bottom-dwellers. One per tank is the safe rule.

• How active is a Lawnmower Blenny?

  Moderate. An active swimmer that appreciates open swimming space.

• How much maintenance does a Lawnmower Blenny need?

  Routine tank care. Weekly partial water changes keep them in top shape.

• What tank size does a Lawnmower Blenny need?

  Nano-tank friendly. Happy in a small, stable, well-filtered tank.

• Is a Lawnmower Blenny a good fit for first-time owners?

  Some experience helps. A little know-how makes life smoother.

• How long do Lawnmower Blenny live?

  4–8 years. Plan for a long, loving relationship.

• What health issues affect the Lawnmower Blenny?

  Keep an eye out for Ich (white spot), Fin rot, Nutritional deficiency. These are worth raising with your vet, along with any screening they recommend.

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