Tetraodon Miurus Pufferfish Care Sheet

Updated: Oct 25, 2020

This care sheet is written with the aim of providing the optimal care for this species of fish.

Pufferfish Enthusiasts Worldwide endeavours to inspire and promote the highest standards of care - not basic or minimum care - using the best evidence available at the time.

Tetraodon miurus

The T.miurus is a species of freshwater pufferfish, from the Tetraodon genus, which is endemic to Africa’s Congo basin and its tributaries. Common names for this species include Potato Pufferfish and Congo Pufferfish.

Red variants of this species are commonly referred to as “Red Congo” or “Red Potato”.

In the wild

The T.miurus is known to inhabit much of the Congo River basin, including many of its tributaries.

T.miurus is a demersal species and most commonly inhabits clean, fast-flowing and highly oxygenated waters where it can be found wallowing (buried) in the substrate or lurking between rocks and vegetation.

The T.miurus populations in the wild are still healthy in suitable habitats and it is considered 'Least Concern' by the International Union for Conservation of Nature (IUCN).

In the aquarium

T.miurus is a very popular choice for ‘oddball’ enthusiasts and imports of wild-caught specimens are quite common.

This pufferfish requires highly oxygenated water with a medium to strong flow, but not overpowering.

A good strength of the flow can be achieved with spray bars from canister filters angled towards the top of the water.

Powerheads with narrow gaps in the grill can also be used to create additional flow. We would advise that cages or guards (such as anemone guards) are used on powerheads to prevent entrapment/injury.

This species prefers a scape which includes an abundance of spaces in which it can hide, but the tank must also provided lots of areas of uncovered substrate to allow for wallowing (read substrate).

Water-logged driftwood and smooth boulders/rocks can be incorporated into the scape of the aquarium. Hardy epiphytes, such as Anubias and Java fern varieties, can be attached to the hardscape for decorative purposes and to provide additional areas of harbourage, but plants that need to be planted into the substrate should be avoided because the T.miurus will disturb the roots.

Tank size

The tank should have a minimum footprint of at least 60cm (23.62 inches) x 40cm (15.75 inches).

The height of the aquarium is not as important as the footprint because the fish will seldom use the higher areas of the tank, but the tank should be at least 30cm (11.81 inches) tall.

This translates to a tank volume of approximately 72 Litres (19.02 US gallons).


The T.miurus is an ambush predator and will spend most of its time lurking in-between the aquarium decor and wallowing in the substrate.

This is how this species naturally hunts, awaiting any potential prey to come within striking distance.