Otocinclus

Otocinclus spp.

Also called Oto, dwarf suckermouth catfish

Otocinclus side portrait: tiny sucker mouth, silver-gray body with black lateral band

Aquascape

Essential gear

45 cm+ tank
Mature planted tank
Filter
Heater
Thermometer
Algae wafers or vegetables

Lifespan

3–5years

Water temperature

22–26°C

6.5–7.5

Water column

All levels

Attaches to hardscape or leaves to graze

Keep in groups

6+ fish

Enough numbers make them bold and active algae grazers

Diet

Herbivore

Algae, wafers, vegetables

Suggested habitat

Aim for a mature planted tank of at least 450 × 300 × 300 mm with enough algae to graze. Broadleaf plants and driftwood provide surfaces to rest on. New tanks lack algae and fish may starve.

Plates are husbandry references—not build plans or generator parameters. Check your own water, vessel, and stocking before you act.