Otocinclus
Otocinclus vittatus
The finest algae-eating fish for planted tanks. Otocinclus are small, peaceful, and won't damage plants — unlike larger algae eaters. They're the gold standard for keeping glass and leaves spotlessly clean.
Buy Otocinclus →Quick Facts
Water Parameters
Natural Habitat
Shallow, clear streams with abundant algae growth on rocks, wood, and vegetation.
Amazon & Paraguay basins
Brazil, Paraguay, Argentina
Feeding
Primarily algae — biofilm on glass, rocks, and leaves. Supplement with algae wafers, blanched zucchini, and spinach when tank algae is depleted.
Compatible Tank Mates
Good Matches
Avoid
Breeding
Difficult in captivity. Eggs are laid on plant leaves and glass. Requires pristine water and abundant biofilm.
Care Tips
Buy only from well-stocked, healthy tanks — they're fragile when stressed
Acclimate very slowly — drip acclimation recommended
Must have biofilm or algae to eat — don't add to brand new tanks
Groups of 6+ are essential — they're schooling fish
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