Zoo•Blast is a nutritious complex of several naturally occuring zooplankton in a wide range of sizes from 200 to 2,000 uM. Zoo•Blast is not made from ground up shrimp or fish like several other products are, but is made with actual plankton! Zoo•Blast provides for growth and increased coloration, by providing proteins, naturally occuring lipids, including important omega fatty acids EPA and DHA, and a wide range of vitamins. It also contains carotenoids, for coloration. Zoo•Blast does not require refrigeration, but refrigeration will prolong shelf life.