L401 Hypancistrus – Hypancistrus sp. | Rare L-number catfish with a fine striped pattern

The L401 Hypancistrus ( Hypancistrus sp. "L401" ) is a beautiful, rare L-number catfish from the Rio Negro in Brazil. With its striking black and white striped pattern, reminiscent of the well-known L333, it is one of the most attractive members of its genus.

The L401 remains relatively compact, reaching a final size of around 10–12 cm, and exhibits calm, peaceful behavior. It is primarily crepuscular and prefers to stay in caves and among roots. It is ideally suited for structured, well-flowing aquariums with warm, soft water.

🌿 Characteristics & Attitude:
🐠 Fish size: S (3–4 cm, juvenile)
🌎 Origin: Brazil (Rio Negro) – Wild caught/Captive bred
🌡️ Temperature: 26-30°C
💧 pH value: 6.0–7.5
⚖️ Total hardness: up to 15 °dGH
🐟 Social behavior: Peaceful, slightly territorial towards other members of their species
🌾 Aquarium: From 100 liters, with roots, stones, fine sand & gentle current

🍽️ Feeding:
The Hypancistrus L401 is a predominantly carnivorous L-number catfish. It prefers frozen and live foods such as brine shrimp, mysis shrimp, cyclops, or mussel meat. It also accepts protein tablets, granules, and occasionally plant-based foods (spirulina, vegetable chips).

💡 Tip:
Provide the L401 with several caves and shady hiding places. Good oxygenation, regular water changes, and a gentle current promote health, vibrant colors, and natural behavior.

👉 Conclusion:
The L401 Hypancistrus ( Hypancistrus sp. “L401” ) is a rare, richly patterned L-number catfish from the Rio Negro – ideal for lovers of exceptional Hypancistrus species and decorative aquarium design.