Culture of fish food organisms

Unit 8 - Brine Shrimp or Artemia

8.5.4.1.Harvesting processing and packaging of artemia cyst
After 15-20 hours of incubation, most of the cysts will be hatched and there will be noticeable colour change in the culture from brown to orange. At this time soft aeration and the pinkish orange nauplii will be seen swimming. An empty or undissolved shell tends to float, while the unhatched cyst and debris sink.A siphon also can be used to remove first the debris and then the nauplii from the bottom. The nauplii should then be collected on a 100-120 micrometer screen, washed with clean water, and placed in a small volume of water. Washing removes contaminants and hatching metabolites. Wash harvested nauplii for feeding.