Review and images by JimoAi; edited by bmathison1972
Pufferfish and porcupinefish belong to the order Tetraodontiformes, which also includes the ocean sunfish, spikefish, file and triggerfish, and the box and cowfish. They can be found in marine, brackish, or freshwater environments depending on the species (porcupinefish are only in marine environments) and are characterised by their ability to ‘puff up’ when threatened.