| Freshwater prawn
Artemia nauplii is the most successful diet throughout the larval rearing period of freshwater prawn larvae. In contrast to pe-naeid shrimp, Macrobrachium can initially be fed with freshly-hatched Artemia nauplii, at densities higher than 0.1 nauplii per ml to assure proper ingestion.
Marine fish
The larvae of several species of marine fish, e.g., bream, grouper, and turbot, can only be offered an Artemia diet after an initial period on a smaller prey, primarily the rotifer, Brachionus plicatilis. In contrast to crustacean larvae, marine fish larvae are cultured on Artemia for a much longer period of time, e.g., 20 to 40 days (Table 4.3.9.). Artemia cyst consumption is also among the highest in marine fish larviculture and ranges from 200 to 500 g per 1000 fry produced. Instar I nauplii are administered for some days as a transition from the rotifer diet to the bigger 24-h enriched preys.
Freshwater fish
Freshwater fish larviculture is often carried out in ponds with natural zooplankton as the larval food. The salmonids, perhaps the group cultured most widely on an intensive basis, have a relatively well-developed digestive tract at first feeding and are usually fed formulated diets from start-feeding. Nevertheless, several species of freshwater fish are fed Artemia. Whitefish larvae (family Corego-nidae) are often fed Artemia until they metamorphose and can be switched to a dry diet. Walleye larvae (Stizostedion vitreum) raised on diets of either Artemia, natural zooplankton, or fish larvae preferred Artemia as a first food. Therefore, a 15-days feeding period on brine shrimp for walleye larvae prior to the feeding of traditional artificial diets is suggested.
Aquarium fish
Both live and frozen adult Artemia are used as food for aquarium fish species. Cysts are also purchased by these users and hatched for feeding as nauplii. Survival, vigor and pigmentation were reported to be significantly improved in several tropical species.
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