A common porcupinefish with 3-4 dark vertical bands or blotches on the sides, and long white to yellowish spines that usually lie flat against the body. When threatened, globefish rapidly inflate themselves with water or air to become spherical in shape. This causes the spines to stand out from the body, making it very difficult for predators to attack. Bray, D.J. 2021, Diodon nicthemerus in Fishes of Australia, accessed 11 May 2021, Pic: Mark Norman / Museum Victoria.