The Spotted Green Puffer Tetraodon nigroviridis is a pretty puffer fish. Although it can get rather large, reaching over 6 1/2 inches (17 cm), its name is a perfect description. It has a beautiful rich green coloration on top with dark spots and a whitish belly. It is commonly called the Green Spotted Puffer, or simply the Spotted Puffer as well.

This Green Spotted Puffer is an adorable fish. The pug-like face with slightly bulging eyes and petite little mouth give it a cute peevish expression. It is very playful, active, and curious making it a joy to watch. It has a great personality as well. It will come to recognize its owner, getting excited when it sees you. It will quickly steal your heart, yet this is not an easy fish to keep as it has very specialized requirements for its care.

As the Green Spotted Puffer matures its needs change, so it is recommended for a more advanced aquarist. A juvenile can be kept in freshwater for a time, but they will quickly need a highly brackish environment to survive. They also have fast growing teeth which are prone to becoming overgrown. They requiring a continuous diet of hard shelled live food often to keep the teeth worn down. Being scaleless, puffer fish are more prone to disease.