It is distinguished from the porcupinefish by the shorter, less sharply pointed, and immovable spines which cover the somewhat spherical body. It can inflate its body by taking either air or water into a ventral extension of the stomach.
This creature is set apart from the porcupinefish by possessing shorter, less pointed, and fixed spines that cover its rounded body. It has the ability to inflate itself by introducing air or water into a ventral extension of its stomach.