Amazon Puffer

About

The Amazon puffer (Colomesus asellus) is a freshwater species from the river systems of South America, ranging across the Amazon basin from Peru down to Marajó Island, as well as the Orinoco and Essequibo river systems. Like all puffers it has that characteristic rounded body and the ability to inflate when threatened, but what sets this fish apart from most of its relatives is its tolerance for company. It genuinely does better in groups than alone, which is rare in the puffer world. In the wild it inhabits freshwater and coastal streams, though it can handle mildly brackish conditions. The species is marked with a pattern of dark bands or saddles over a pale body, giving it a bumblebee-like look that makes individuals easy to spot in a tank. As a carnivore it needs meaty foods and hard items like snails to keep its constantly growing teeth worn down. Dental overgrowth is a real husbandry concern that keepers should stay on top of. It is generally considered an intermediate-level fish, not because it is delicate, but because its dietary needs and its tendency to nip fins on tankmates require some planning and experience to manage well.