Zooplanktos-S from Brightwell Aquatics is a concentrated suspension designed to provide a natural food source for various marine aquarium inhabitants. It contains phytoplankton-enriched adult Brachionus sp. rotifers, their eggs, and the eggs of another group of crustaceans, providing essential nutrients including amino acids, fatty acids, vitamins, minerals, and carotenoid pigments. This supplement is ideal for feeding stony corals with short tentacles, clams, sponges, tunicates, feather dusters, larval crustaceans, juvenile fish, and adult planktivorous fishes.