With its big eyes, smiley mouth and ability to balloon into a spiky ball, this is the most well-known pufferfish in the world—and you can see it right here at the Aquarium in our special exhibition, ¡Viva Baja! Life on the Edge.
The porcupinefish (Diodon hystrix) has fused, beak-like teeth that it uses to crack open crustaceans and satisfy its huge appetite. To discourage predators, it inflates itself with water, increasing its size up to three times. Furthermore, sharp spines that usually lie flat on its body pop into attention as an added warning to this fish's foes.