Redtail Catfish – A Powerful and Impressive Freshwater Predator

The Redtail Catfish is a striking and large freshwater fish known for its vibrant red tail, strong body, and predatory nature. Native to South America, particularly the Amazon, Orinoco, and Paraná River basins, this catfish is popular among experienced aquarists for its impressive size and commanding presence. Redtail Catfish are best suited for large aquariums due to their growth potential and active feeding behavior.

Appearance
Redtail Catfish have a robust, elongated body with a broad head and powerful jaws. Their most distinctive feature is the bright red or orange tail fin, which contrasts with their dark gray to brown body. Adults can grow to over 4 feet in the wild, but in home aquariums they commonly reach 2–3 feet with proper care. Juveniles display the same coloration, though less intense, which intensifies as they mature.

Temperament and Behavior
Redtail Catfish are generally peaceful with similarly sized tankmates but are predatory and may eat smaller fish. They are mostly bottom dwellers and become more active during feeding times. They can recognize their owners and may become interactive over time, often swimming to the front of the tank when approached.

Tank Requirements
Tank Size A minimum of 500 gallons for adult Redtail Catfish, as they grow very large and require ample swimming space.
Water Conditions Slightly acidic to neutral pH 6.5–7.5 with soft to moderately hard water.
Temperature 72–82°F 22–28°C for optimal health and growth.
Aquascape Provide open swimming areas with sturdy hiding spots such as large driftwood or rocks. Ensure the tank has a secure lid, as large catfish can occasionally jump.

Diet
Redtail Catfish are carnivorous and require a protein-rich diet. Feed them a variety of foods including fish fillets, shrimp, worms, pellets formulated for large carnivorous fish, and occasional live feeder fish. Juveniles may require more frequent feedings, while adults can be fed 2–3 times per week.

Tankmates
Ideal tankmates are other large, non-aggressive fish that cannot be swallowed. Avoid small fish or invertebrates, as they will likely be eaten. Suitable tankmates include large plecos, arowanas, and other giant South American cichlids.

Why Choose the Redtail Catfish
The Redtail Catfish is an impressive, powerful, and long-lived freshwater fish that becomes a centerpiece in any large aquarium. Its striking red tail, massive size, and unique behavior make it a favorite among experienced aquarists seeking a bold and fascinating aquatic predator.