ZoPlan Advanced Zooplankton Diet is a blend of dried crustaceans and other sea creatures in a size range that makes an ideal food for marine invertebrates such as soft and stony corals, seafans, anemones, zoanthids, clams, scallops, feather duster worms, and other filter feeders. Also for plankton eating fishes. Rich in vitamins, trace elements, amino acids, and lipids.