Corydoras Catfish vs Otocinclus

Side-by-side care comparison to help you choose.

Corydoras CatfishOtocinclus
DifficultyBeginnerIntermediate
Adult size1-2.5 inches1.5-2 inches
Lifespan3-5 years3-5 years
Min tank size10 gallons10 gallons
Water temp74-80°F72-78°F
pH6.5-7.56.5-7.5
Temperamentpeacefulpeaceful
Tank matesPeaceful community fish such as tetras, rasboras, and dwarf cichlids.Small peaceful fish such as tetras, rasboras, and dwarf cichlids.
DietSinking pellets or wafers as staple, supplemented with frozen or live foods like bloodworms and brine shrimp; feed once or twice daily.Primarily herbivorous; feed algae wafers, blanched vegetables (zucchini, spinach), and ensure natural algae growth. Feed once daily, small amounts.