Tetraodon schoutedeni is a species of pufferfish native to Africa's Congo Basin. Growing to a length of 9–11.5 cm (3.5–4.5 in), the species features a slightly rounded, globular body plan that tapers into a teardrop towards the tail; a design often seen in puffers. Additionally, they feature a light brownish-green body covered in black spots which derive its common name of the "Spotted Congo Puffer". this brownish-green body plan features scaleless skin that may oftentimes change color depending on environmental conditions and possible stress responses within the individual fish. The rest of the body design is conducive of the general anatomy of species belonging to the Tetraodon genus. These features include largely independently moving eyes, the ability to inflate their body and puff up as a defense mechanism, and a sharp beak composed of fused teeth that allow them to crack open their prey, which generally consists of insects and shelled organisms. Moreover, they contain the most distinctive feature of Tetraodon, which is tetrodotoxin, a neurotoxin that is enveloped within the skin and internal organs of the fish, although the species is not nearly as toxic as others of its shared genus.

Regarding sexual dimorphism, this species contains a few key differences between male and female fish. The males are oftentimes around 9cm(3.5") while females may exceed 4". Additionally, females will appear rounder and slightly more swollen than the males. KFPI indicates that males tend to have a shorter snout and darker coloration of the spots along the cheek line

A smaller freshwater pufferfish, T. schoutedeni predominantly exists within the Lua River and Ubangi River basin within the Republic of Congo, where they are native alongside many other of the Tetraodon genus. This species has been made famous by its small size, unique spotted coloration, and tame social behavior. This makes it a popular choice among aquarium hobbyists.

Originally discovered in 1926, this species is named in honor of the Belgian zoologist Henri Schouteden.

...