Congo Puffer (Potato Puffer)

The Congo Puffer (Potato Puffer), scientifically known as Tetraodon miurus, belongs to the Puffers family group. Adults reach a maximum size of approximately 15 cm and have a globular body shape with a moderate growth rate. Classified as highly aggressive, this species primarily occupies the bottom zone of the aquarium and produces a extreme level of biological waste.

To thrive, the Congo Puffer (Potato Puffer) requires a freshwater only aquarium with a minimum volume of 110 litres and a tank length of at least 80 cm. Water temperature should be maintained between 24°C and 28°C, with a pH range of 6.5–7.5 and a general hardness of 5–15 dGH. A moderate water flow is preferred.

Due to its specialist needs, the Congo Puffer (Potato Puffer) is best suited for fishkeepers who can provide a carefully planned setup. This species is available in 2 varieties: Standard (Brown/Mottled) and Red Morph. Each may differ slightly in size, temperament, or care needs, so it is worth checking the specific requirements of the variety you plan to keep.

When setting up an aquarium for the Congo Puffer (Potato Puffer), a moderate water flow best suits their natural preferences. Because this species occupies the bottom zone, the aquarium layout should prioritise sufficient floor space with hiding spots among rocks, wood, or dense planting. Useful additions include a sand substrate to accommodate their sifting behaviour. Keepers should note that expect substrate disturbance, so lightweight décor should be secured.

Classified as highly aggressive, the Congo Puffer (Potato Puffer) is best housed alone, as they do not tolerate others of their kind in confined spaces. When choosing tankmates, any fish small enough to fit in its mouth will likely be eaten, ornamental shrimp are not safe companions, snails will be treated as food rather than tankmates, conspecific aggression can be intense, especially in smaller tanks, and territorial behaviour may cause issues if hiding spots or floor space are limited. Selecting tankmates that favour different water layers from the bottom zone can help reduce competition and territorial overlap.

The Congo Puffer (Potato Puffer) is a predatory species that will readily consume small fish, so nano or bite-sized tankmates should be avoided, will hunt and eat ornamental shrimp, making it unsuitable for shrimp-focused setups, and actively feeds on snails and can be used as a natural snail population control.