Flatwhiskered Catfish
Pinirampus pirinampu
A schooling river giant that needs serious space and serious commitment.
About
The Flatwhiskered Catfish (Pinirampus pirinampu) is one of those species that immediately reminds you how large South American river systems truly are. Native to several major drainages across the continent, including the Amazon, Orinoco, Essequibo, and Paraná basins, this is a fish built for wide, open water. Adults routinely reach well over three feet in length, which puts it firmly in the category of species only suited to very large, dedicated setups. What makes it particularly unusual among catfish of this size is its tendency to form schools in the wild, where it cruises the lower water column feeding on bottom-dwelling animals. Replicating that social behavior in captivity means keeping more than one, which quickly compounds the space requirements. The care level is listed as intermediate rather than advanced, which reflects its relative hardiness across a decent range of water conditions, but that rating should not lull anyone into underestimating the sheer logistics of housing a fish this large. This is not a species for a community display tank or a casual upgrade. It belongs with keepers who have the infrastructure to support it long-term and an appreciation for large, active catfish as a focus species.
Similar species
Other fish you might consider
Good tank mates
Species that tend to coexist peacefully with Flatwhiskered Catfish
From the same region
Share the same natural habitat. Great for a biotope-themed tank
Frequently asked questions
- How big does the Flatwhiskered Catfish get?
- The Flatwhiskered Catfish reaches about 24–31.5" as an adult.
- What size tank does the Flatwhiskered Catfish need?
- A minimum of 250 gallons is recommended for the Flatwhiskered Catfish, with more room needed for a proper group.
- What water parameters does the Flatwhiskered Catfish need?
- The Flatwhiskered Catfish does best with a temperature of 72–82°F, a pH of 6–8, hardness around 6–16 dGH.
- Is the Flatwhiskered Catfish aggressive?
- The Flatwhiskered Catfish is aggressive and is best kept alone or with robust tankmates that can hold their own.
- What does the Flatwhiskered Catfish eat?
- The Flatwhiskered Catfish is a carnivore. It needs a meaty, protein-rich diet of frozen or live foods.
- How long does the Flatwhiskered Catfish live?
- With good care, the Flatwhiskered Catfish typically lives 5-8 years.