Otocinclus vs Swordtail

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

OtocinclusSwordtail
DifficultyIntermediateBeginner
Adult size1.5-2 inches4-5 inches
Lifespan3-5 years3-5 years
Min tank size10 gallons20 gallons
Water temp72-78°F72-82°F
pH6.5-7.57.0-8.0
Temperamentpeacefulpeaceful
Tank matesSmall peaceful fish such as tetras, rasboras, and dwarf cichlids.Peaceful community fish like mollies, platies, tetras, corydoras.
DietPrimarily herbivorous; feed algae wafers, blanched vegetables (zucchini, spinach), and ensure natural algae growth. Feed once daily, small amounts.Omnivore; feed high-quality flake or pellet daily, supplement with frozen or live foods like brine shrimp and daphnia 2-3 times per week.