

Blennies
Lawnmower Blenny
Salarias fasciatus
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.



