Black Otocinclus

Description

• Size: Otocinclus negros grow to about 1.5 to 2 inches (4–5 cm).

• Color: They have a dark gray to black body with a lighter underbelly, which helps them blend in with their surroundings.

• Behavior: They are peaceful and prefer to live in small groups. They spend most of their time grazing on algae.

Aquarium Care

Tank Size

• A 10-gallon (38 liters) tank is ideal for a small group of 5 or more Otocinclus negros. Larger tanks are even better for more comfort.

Water Parameters

• Temperature: 72°F to 79°F (22°C to 26°C).

• pH: 6.0 to 7.5 (slightly acidic to neutral).

• Hardness: Soft to moderately hard water (2–15 dGH).

• Water Quality: Keep the water clean with regular changes (20-30% weekly) and a good filter.

Diet

• Otocinclus negros are herbivores and mainly eat algae.

• Supplement with blanched vegetables (like zucchini or cucumber) and algae wafers.

• They prefer to graze on algae in the tank.

Tank Setup

• Substrate: Fine gravel or sand is best for foraging.

• Plants: Provide plenty of plants to allow for algae growth. They like to graze on plants.

• Lighting: Moderate lighting works best.

• Water Movement: They prefer gentle water flow, so use a sponge filter or adjustable filter.

Tank Mates

• They are very peaceful and get along well with small, peaceful fish like:

  • Tetras

  • Corydoras Catfish

  • Guppies

• Avoid large or aggressive fish that might harass them.

Breeding

• Breeding Otocinclus negros in captivity is rare but possible. They lay eggs on plants or rocks, and after fertilization, the eggs are left to develop on their own.

Summary

• Otocinclus negros are small, peaceful fish that eat algae.

• They need a tank with plenty of plants and algae, and water that is clean, warm, and slightly acidic.

• They thrive in groups and are best kept with peaceful, small tank mates.