Instant Baby Brine Shrimp is ready-to-use fish food consisting of non-living Artemia nauplii (baby brine shrimp) in a saline solution. It can be used in both freshwater and marine aquariums and is the perfect food for feeding fish fry/larvae, small fish, reef aquariums, and other small aquatic organisms. Additionally, the nauplii have an excellent buoyancy and remain in the water column to facilitate feeding. One bottle contains more than 1.5 million baby brine shrimp. Even though the jar of Instant Baby Brine Shrimp can be stored at room temperature, once open, it must be kept in a refrigerator. This product does not contain or produce live brine shrimp. Instant baby Brine Shrimp was developed in collaboration with the Artemia Reference Center (of the Ghent University in Belgium).