Brightwell Aquatics Zooplanktōs-S is a concentrated suspension of phytoplankton-enriched adult Brachionus sp. (rotifers), their eggs, and the eggs of another group of crustaceans. This formulation provides over four-thousand prey items per milliliter in sizes ranging from 50 to 300 micrometers, making it an ideal food source for many species of stony corals, clams, sponges, tunicates, tube worms, larval crustaceans and bivalves, juvenile fishes, and adult planktivorous fish. It is enriched with a proprietary amino acid that aids in the coloration enhancement of both invertebrates and fish. Zooplanktos-S does not require refrigeration, ensuring long-term stability and convenience for aquarium maintenance.