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Lawnmower Blenny
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Blennies

Lawnmower Blenny

Salarias fasciatus

Usually available in Nepalbeginnerreef safe

Endlessly entertaining perch-and-graze behaviour. Peaceful with everything except its own kind; may nip at some large-polyp coral if underfed.

Difficulty

beginner

Adult size

Up to 12 cm

Temperament

Peaceful, comical personality

Minimum tank

120+ litres

Diet

Primarily herbivore — grazes algae films all day; supplement with spirulina foods

Lifespan

5–8 years

Water parameters

  • Temperature75–80°F
  • Specific gravity1.024–1.026
  • pH8.1–8.4

Species-specific requirements override general saltwater guidelines.

Natural habitat

Rocky and coral reefs with plenty of algae growth

Care notes

Lives to mow algae. If your tank has no algae you must feed it deliberately — never assume it will find enough.

Sourcing & ethics

We list only species that can be sourced responsibly. Availability in Nepal varies — confirm current stock before planning a build.

Commonly available; a favourite algae-control fish.

Compatibility

Good company

Keep with caution

“Caution” reflects likely aggression or predation — outcome depends on tank size, order of addition and individual temperament.

Recommended for this species

Equipment matched to a 120+ litres+ saltwater system.

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