Tigrinus Catfish Care Guide - Size, Diet, Tank Setup & Breeding

The Tigrinus Catfish, Brachyplatystoma tigrinum, is a striking large pimelodid catfish recognised by its long, flattened body and bold dark tiger-like bands. Its pale golden, cream or silvery base colour is crossed by irregular black markings, while the elongated head and prominent barbels give it the classic shovelnose-catfish profile.

This is an active but generally secretive predator, most often becoming lively after dark. It uses its barbels and sensitive body to locate prey in turbid water, and its streamlined shape allows it to hold position and travel through strong river currents.

In the wild, Tigrinus Catfish are associated with deep channels, rocky margins and fast-flowing sections of major Amazonian rivers. Young fish are particularly patterned and are highly sought after in the ornamental trade, although their eventual size makes them a specialist species rather than a typical community aquarium fish.

As they mature, they become powerful, impressive fish that command a very large aquarium or public-scale display. They can be relatively calm with suitably sized companions, but their predatory instincts and ability to swallow surprisingly large prey must always be taken seriously.

Tigrinus Catfish are native to the upper Amazon Basin in South America, including tributaries in Peru, Colombia and Brazil. They inhabit large tropical rivers and connected channels with flowing, well-oxygenated water.

A fully grown Tigrinus Catfish requires at least about 1,500 litres, with a larger system strongly preferable; a practical adult footprint is around 240 x 90 cm, with sufficient length for swimming and turning. Use powerful filtration, vigorous circulation and excellent oxygenation, while leaving generous open floor space. A smooth sand or fine-gravel substrate, rounded rocks, sturdy driftwood and a few secure shaded retreats suit the species, but all decor must be stable because this powerful catfish can displace loose ornaments.

Up to about 60 cm (23.6 inches) in total length. Reliable sex-based size differences are not well established, although females may become slightly deeper-bodied or heavier than males.

This carnivorous predator should be offered a varied diet of appropriately sized whole fish, prawns, earthworms, mussel, squid and quality sinking carnivore foods. Juveniles can be fed smaller portions more frequently, while adults need substantial but carefully measured meals rather than constant feeding. Avoid relying on feeder fish, particularly unquarantined species, because they can introduce disease and provide a poor nutritional balance.

Tigrinus Catfish can be housed with peaceful, robust fish that are too large to be swallowed, such as large stingrays, mature silver dollars, suitably sized characins and other compatible South American river fish. Tankmates should tolerate warm, well-oxygenated, moving water and should not be excessively aggressive. Small tetras, juvenile fish, ornamental shrimp and other bite-sized tankmates will be treated as prey, while highly territorial cichlids or fin-nipping species are best avoided.

Tigrinus Catfish are not routinely bred in home aquariums. In nature, they are migratory river fish that reproduce during seasonal changes in water level, with spawning linked to long-distance movement and powerful flowing water. Successful breeding would require an exceptionally large, specialised system that recreates these conditions, so captive specimens are generally wild-caught or produced in professional facilities.

Tigrinus Catfish are difficult to sex visually, and males and females are broadly similar in colour and body shape. Mature females may be somewhat fuller-bodied, particularly when carrying eggs, but this is not a dependable identification method.