The green spotted puffer, Tetraodon nigroviridis, is a colorful species of the Tetraodontidae family native to South and southeast Asia. The fish is named for its rich green coloration at the top with dark spots and white underbelly.
The species bears a pug-like face, bulging eyes and small mouth; its playful and curious demeanor makes it a popular tank fish among aquarium enthusiasts. A brackish-freshwater fish, they are best kept in saltwater environments as they age. Given a large enough tank, the green spotted puffer may reach up to 6.5 inches in captivity, and requires a diet of hard-shelled live food.