Pao cochinchinensis (Steindachner 1866)

Greenish back with black spots, not well demarcated from belly; belly greyish to dark brown, with or without dark markings; adults with ocellus, sometimes red, but most commonly made of a large black blotch surrounded by a paler area and a series of more or less contiguous large black blotches; juveniles with a small red spot in center of concentric pale and black circles (Ref. 43281).

Male tends the clutch.

Pao cochinchinensis is a species of freshwater pufferfish native to the basins of the Mekong and Chao Phraya Rivers. This species grows to a length of 7 centimetres (2.8 in) SL.

It is known for its reputation to attack people by slicing off bits of flesh. Their tendency to take chunks of human flesh is similar to piranhas. It is one of two pufferfish species to attack humans, the other species is the Ferocious Pufferfish (Feroxodon multistriatus).