These Brine Shrimp eggs are from the Great Salt Lake (USA) and are without doubt one of the best quality eggs available on the market today. Minimum hatch-out of 225000 nauplii (baby brine shrimp) per gram of cysts following a 24 hour incubation period. Based on the most recent harvest, this equates to a hatch-out of over 90%!
Brine shrimp have the ability to produce dormant eggs, known as cysts. This has led to the extensive use of brine shrimp in aquaculture. The cysts may be stored for long periods and hatched on demand to provide a convenient form of live feed for larval fish and crustaceans.
From cysts, brine shrimp nauplii can readily be used to feed to fish fry and crustacean larvae just after one-day incubation. Instar I (the nauplii that just hatched and with large yolk reserves in their body) and instar II nauplii (the nauplii after the first moult and with functional digestive tracts) are more wildly used in aquaculture, for the reasons they are easy for operation, nutrients rich, and of small size which makes them suitable for feeding fish and crustacean larvae live or after drying. The hatching manual can be seen here.