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The Bluelined Grouper is brown to olive with dark blue lines ont he head body and fins. It is a predator and will eat small fish and ornamental crustaceans. Groupers are generally reef safe, and they will not harm corals, but their size requires plenty of room to swim and hide. They should greedily eat frozen foods like shrimp and clam, and have large appetites. Tankmates sould be of similar size and temperament.