To date, Artemia cysts are commercially available from various production sources in America, Asia, Australia, and Europe. A knowledge of the hatching and naupliar characteristics of a particular batch of cysts can increase greatly the effectiveness of its usage in a hatchery. Aside from strictly business aspects such as price, payment conditions, shipment and insurance costs, etc., the following criteria should be taken into consideration when selecting a specific cyst product: hatching quality, cyst package condition, naupliar size, and naupliar food value (Dhont et al.,1993).