Panther groupers can be considered aggressive fish as it will eat anything it can fit into its mouth. Panther groupers do grow relatively fast and should be kept in rather larger aquariums - I would suggest keeping them in 150 gallons or more depending out the size of the fish. These fish tend to be more active and social when compared to other groupers. For the most part, I fed my panther grouper live food and it would eat just about anything.