Commonly known as the porcupinefish, Diodon hystrix is found in warm, shallow waters of coral reefs across the world. Notable for its ability to inflate its body and erect spines when threatened, it has a distinctive spotted pattern and large, expressive eyes. It primarily feeds on crustaceans and mollusks.

Diodon hystrix, commonly known as the Spot-fin Porcupinefish, is native to tropical and subtropical waters across the globe. It is found in the Atlantic Ocean, including the Caribbean Sea and the Gulf of Mexico, as well as the Indo-Pacific region from East Africa to Hawaii, including the Red Sea and the Great Barrier Reef.

The Spot-fin Porcupinefish inhabits coral reefs, lagoons, and rocky areas. It is typically found at depths ranging from 2 to 50 meters, preferring warm waters with temperatures between 24°C and 28°C.

Diodon hystrix is a nocturnal species that feeds primarily on hard-shelled invertebrates, such as sea urchins, crabs, and mollusks. Its strong beak-like teeth are adapted for crushing shells. The species is known for its ability to inflate its body by swallowing water or air as a defense mechanism against predators.