The Panther Grouper, Cromileptes altivelis, also known as the Polka Dot Grouper, Barramundi Cod, Humback Grouper, and High-Finned Grouper, has a beautiful silver body with black spots all over. The Panther Grouper is the most widely available grouper in the aquarium industry and for good reason, they are hardy and gorgeous. However, the Panther Grouper is a legitimate predator and will eat anything that will fit into its mouth. So it goes without saying it should not be housed with small inverts or fishes. They thrive best in tanks with a good filtration system to cycle waste as well as plenty of live rock hiding places.