Coroatá

About

The coroatá (Platynematichthys notatus) is a substantial South American catfish found across the Amazon and Orinoco river basins, where it inhabits the kind of vast, slow-moving freshwater systems that give it plenty of room to roam. It belongs to the family Pimelodidae, the long-whiskered catfish, and like its relatives it carries those characteristic long barbels that help it navigate and locate food in murky water. Adults can push well past two feet in length, which means this fish will outgrow most home aquariums unless you plan ahead from the start. A 200-gallon setup is the realistic minimum, and even that will feel cozy as the fish matures. Despite that size requirement, the coroatá is generally considered manageable for keepers who have the space and commitment, without demanding the kind of specialized water chemistry expertise that some South American species require. It tolerates a reasonable range of soft to moderately hard, acidic to neutral water. The main challenge here is simply scale. The tank, the filtration, and the feeding all need to match a fish that keeps growing for years. If you can meet those practical demands, this is a characterful, active catfish that makes a real impression in a large display.