Tetraodon schoutedeni, commonly known as the Schouteden's or Congo Dwarf Puffer, is a small freshwater pufferfish native to the Congo River Basin in Central Africa. It is a popular aquarium fish due to its small size and interesting behavior.

Schouteden's puffers have a distinctive round body shape and are typically brown or green in color, with a white belly and black spots or stripes on their sides. They have large eyes and a small, puckered mouth with four teeth that are visible when their mouth is open.

In the wild, Schouteden's puffers inhabit slow-moving rivers, streams, and marshes with dense vegetation. In captivity, they require similar conditions, such as a well-planted aquarium with plenty of hiding spots and soft, slightly acidic water. They are carnivorous and feed primarily on small invertebrates and crustaceans, but can also be fed frozen or live foods such as bloodworms or brine shrimp.

Schouteden's puffers are known for their active and curious behavior, often exploring their surroundings and interacting with other fish in the tank. However, they can be aggressive towards other fish, especially those with long fins, so it is recommended to keep them in a species-only or a carefully chosen community tank with other small, peaceful fish. They are also known to be jumpers, so it is important to have a secure lid on their tank.