Freshwater species
Otocinclus
Otocinclus spp.
A small, peaceful algae-grazing catfish that does best in a mature aquarium with established biofilm and a dependable supplemental feeding routine. Otocinclus are social fish and should not be treated as a replacement for aquarium maintenance.
Currently listed on New Fish Day
Otocinclus appears on the current New Fish Arrivals list. Availability changes as livestock sells.
Check New Fish ArrivalsQuick Care Information
- Adult size
- About 1.5 inches
- Temperature
- 72–78°F
- pH
- 6.0–7.5
- Minimum aquarium
- 20 gallons recommended
- Temperament
- Very peaceful community fish
- Group
- 4–6 to start; larger groups when food supports them
Before You Bring Them Home
Use these numbers as a starting point, not as a substitute for evaluating the whole aquarium. Tank dimensions, filtration, water stability, existing livestock, adult size, and behavior all matter when choosing fish or shrimp.
Read the Full Otocinclus Care Guide
Browse freshwater fish groups or contact Fins For Grins with questions about your setup.