Green Spotted Puffer Tetraodon nigroviridis
An attractive and aptly named fish, Green Spotted puffers sport dark black spots on a metallic green background which is contrasted by bright white bellies. Reaching about six inches, with big teeth and a peevish disposition, it is important to choose their tankmates carefully. These puffers require alkaline, brackish water to really thrive, but will become personable and delightful pets given the right conditions.