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Freshwater fishGiant Otocinclus
Giant Otocinclus
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The giant otocinclus looks like the common otocinclus was hit by the Avengers™ Ant Man gamma ray machine. Giant otocinclus come from Peru and grow to 4 inches. These peaceful catfish are scavengers and algae eaters like their smaller cousins, but the giant otocinclus will not tolerate pH over 7.5. These are rare fish prized by Amazon aquarium enthusiasts.
Quick Facts
| Scientific Name | Hypoptopoma gulare |
| Origin | Amazon basin, Peru |
| Care Level | Moderate |
| Temperament | Peaceful |
| Adult Size | Up to 4" |
| Lifespan | 5–6 years |
| Diet | Algae eater (also eats algae wafers) |
| Water Temperature | 74–80°F |
| pH | 6.0–7.5 |
| Group Size | Does best in a group |
| Shipping Size | Approx. 2–4" |
Care Guide
Tank setup: Give them a mature, planted tank with algae to graze, gentle filtration and stable, clean water.
Feeding: Otocinclus graze on soft algae, but don't rely on algae alone. Also feed algae wafers.
Tankmates: Otos are very peaceful and get along with almost any small community fish, plus shrimp and snails.
Good to know: Giant otos often rest on plant leaves and glass and graze much like their smaller cousins.
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