Zoo Med Can O' Worms Reptile & Fish Food is the latest in reptile nutrition and convenience. Feeder insects are cooked in the can to lock in flavor and freshness. This process softens the exoskeleton for easier digestion. These medium-size mealworms are ideal for most lizards， turtles， fish and birds as well as small animals. Every can is filled with 300 delicious farm-raised mealworms. It’s a much more convenient way to feed your pet than having to store live insects until mealtime.