Overview
- “Otocinclus” or “oto” covers several small algae-eating catfish. The one sold most often is probably Otocinclus macrospilus. [UNVERIFIED] Shipments are often mixed species.
- O. macrospilus comes from the upper Amazon in Peru, and possibly Colombia and Ecuador.
- Grows to about 1.4 in (3.5 cm) standard length.
Feeding
- Grazes algae and microorganisms.
- Most of the diet should be vegetables, such as zucchini, cucumber and blanched spinach, plus algae wafers.
Habitat
- A tank with a base of 18 × 12 in (45 × 30 cm).
- Heavily planted with broad leaves and driftwood. A mature tank with algae is best.
- Water: 70–79°F (21–26°C), pH 5.5–7.5, GH 1–12.
Fish Care
- Can be delicate after import. Many arrive thin.
- Add to an established tank only and feed vegetables well.
Compatibility
- Very shy and easily outcompeted for food.
- Good with small peaceful tetras, Apistogramma and small Corydoras.
Aquarium Behavior
- Sociable. Keep a group of at least 6.
Breeding
- Has been bred, but few details exist.
- Spawns in a T position like Corydoras, but scatters its eggs.