The Congo puffer or potato puffer (Tetraodon miurus) is a freshwater pufferfish found in areas of the Congo River in Africa, including rapids.Congo puffers grow to about 15 cm long. In the wild, they feed mainly on fish, but in captivity they eat different foods, such as bloodworms and river shrimp. They are inactive fish, spending most of their time buried in sand or other substrate, with the ability to adapt their colouration to hide from potential prey.