Arothron nigropunctatus is a small sized fish which grows up to 33 cm (1 ft) length.

[4] It lives close to external reef slopes and lagoons from the surface to 25 m (82 ft) depth.

[2] Arothron nigropunctatus feeds on benthic invertebrates, sponges, algaes, coral like Acropora tips, crustaceans and mollusks.

[3] Arothron nigropunctatus holds the deadly poison tetrodotoxin, which protect it from predators.

In order to ward off potential enemies, they can inflate their bodies by swallowing air or water.