L011 Redfin Thresher Pleco – Aphanotorulus emarginatus | Red fin edge & rare L-number catfish

The L011 Redfin Thresher Pleco ( Aphanotorulus emarginatus ) is an exceptionally beautiful and rare L-number catfish from the Rio Tocantins river system in Brazil. Its striking feature is the bright red fin margins, which contrast fascinatingly with the olive-brown base color with its dark spotted pattern.

The L011 is a peaceful, lively catfish that likes to stay on smooth stones or roots, using its sucker mouth to search for algae and other marine growth. Reaching a maximum size of about 15–18 cm, it remains medium-sized and is ideally suited for community aquariums with peaceful tank mates.

🌿 Characteristics & Attitude:
🐠 Fish size: M (7–8 cm)
🌎 Origin: Brazil (Rio Tocantins, South America) – Wild caught/Captive bred
🌡️ Temperature: 25-30°C
💧 pH value: 6.0–7.8
⚖️ Total hardness: up to 20 °dGH
🐟 Social behavior: Peaceful, sociable, can easily establish territories
🌾 Aquarium: From 200 liters, with current, sandy bottom, stones & roots

🍽️ Feeding:
The Aphanotorulus emarginatus is an omnivore with a preference for plants. It eats algae, spirulina, vegetable chips, blanched cucumber, and zucchini. It also accepts frozen foods such as brine shrimp or mysis shrimp. A varied diet promotes vibrant colors and vitality.

💡 Tip:
A gentle current and oxygen-rich water are important for the well-being of the L011 . Dark substrate makes its red fin coloration stand out particularly intensely. Provide it with roots to rasp on and shady hiding places.

👉 Conclusion:
The L011 Redfin Thresher Pleco ( Aphanotorulus emarginatus ) is a peaceful, colorful L-number catfish with characteristic red fin edges – perfect for large, naturalistic South American aquariums.