Ageneiosus magoi

The Ageneiosus magoi is a fascinating and unusual South American driftwood catfish belonging to the Auchenipteridae family. This relatively uncommon species is prized by specialist aquarists for its distinctive appearance, streamlined body, and secretive behaviour.

Its body is generally pale silver to creamy white, often marked with irregular dark brown to black patches and bands. The contrast between the light body and dark markings gives this catfish a striking appearance, particularly when viewed against dark substrate and natural driftwood.

Unlike many traditional bottom-dwelling catfish, Ageneiosus magoi has a more streamlined, laterally compressed body and can spend considerable time swimming through the middle and lower areas of the aquarium. It is an excellent choice for aquarists looking for something unusual beyond conventional plecos and Corydoras.

🌿 Why Choose Ageneiosus magoi?

🐟 Unusual and rarely seen South American catfish
⚪ Attractive pale silver-white body with contrasting dark markings
🌿 Natural inhabitant of South American freshwater environments
🪵 Excellent choice for natural driftwood aquascapes
🌙 More active during subdued lighting and evening hours
✨ Highly unusual alternative to conventional aquarium catfish
💪 Adaptable when provided with suitable water quality
🏆 A fascinating specialist species for experienced aquarists

📏 Care Requirements

🧬 Scientific Name: Ageneiosus magoi
📛 Common Name: Ageneiosus magoi, Driftwood Catfish
🏠 Tank Size: 300L+ recommended
📏 Adult Size: Approximately 20–30cm, potentially larger depending on specimen and conditions
🌡️ Temperature: 24–28°C
⚗️ pH Range: 6.0–7.5
💧 Water Hardness: Soft to moderately hard water
🧘 Temperament: Generally peaceful, but predatory towards sufficiently small fish
🍽️ Diet: Sinking carnivore pellets, prawns, mussels, earthworms, bloodworm, shrimp, and other meaty foods
👥 Group Size: Can be kept singly or in compatible groups where sufficient space is available

🏡 Aquarium Setup

Ageneiosus magoi benefits from a spacious aquarium designed around natural South American conditions.

An ideal setup should include:

🪵 Large pieces of driftwood and branches
🪨 Smooth rocks and caves
🌿 Hardy aquatic plants
🏖️ Fine sand or smooth substrate
🌊 Good filtration and well-oxygenated water
🌑 Shaded areas created by wood, plants, or floating vegetation

Although it may rest around the lower sections of the aquarium, this species is not necessarily restricted to the substrate and may actively swim through the middle and lower levels, particularly after the aquarium lights have dimmed.

A secure aquarium lid is recommended, as larger catfish can be surprisingly powerful swimmers and may jump when startled.

🐠 Compatibility

Ageneiosus magoi can be maintained in a community aquarium containing suitably sized, peaceful South American fish.

Suitable companions can include:

✅ Larger tetras
✅ Medium to large peaceful cichlids
✅ Angelfish
✅ Severums
✅ Larger Corydoras
✅ Peaceful plecos
✅ Other appropriately sized South American catfish

Avoid keeping them with:

❌ Very small tetras or fry
❌ Tiny shrimp
❌ Small ornamental fish that can fit inside their mouth
❌ Highly aggressive cichlids
❌ Fin-nipping species

Despite its generally peaceful temperament, Ageneiosus magoi is a predatory catfish and may consume smaller tank mates, particularly at night.

🍽️ Feeding & Behaviour

This species is primarily carnivorous and should receive a protein-rich diet.

Suitable foods include:

🟤 Sinking carnivore pellets
🦐 Prawns and shrimp
🦪 Mussels
🩸 Bloodworm
🪱 Earthworms
🐟 High-quality frozen or live aquatic foods

Feed after lights-out or during the evening when possible, as this is when many specimens become considerably more active.

Providing varied meaty foods will help maintain good condition and encourage natural feeding behaviour.

⚠️ Important Notes

Ageneiosus magoi is a specialist species and is best suited to an established, spacious aquarium rather than a small community tank.

Its relatively unusual body shape and swimming behaviour mean it should not simply be treated like a conventional bottom-dwelling catfish. Providing plenty of open swimming space alongside driftwood and shaded retreats will allow it to exhibit a wider range of natural behaviours.

Because of its predatory feeding habits, tank mates should always be selected according to their adult size rather than their size when first introduced.

Excellent filtration and regular water changes are particularly important with larger carnivorous catfish, as their protein-rich diet can contribute significant waste to the aquarium.

A dark substrate and substantial driftwood can also make its pale body and contrasting markings stand out beautifully, making this an impressive feature fish for a large South American-themed aquarium.