Bio-Pure Frozen Clam on a Half Shell is a fish food designed specifically for Puffers, Triggers, and other fish that need to grind their teeth. The clam meat is rich in amino acids, protein, and omega-3 fatty acids, making it a nutritious food source. It comes with half the shell removed for easy feeding. It's recommended to feed your fish only as much as they can consume in a 20-minute period, no more than 2 times per week.