Yeah, Artemia are crustaceans also known as Brine Shrimp I think. My Peppered Cories love them but they're only used as a treat since I found that they can um... Well let's say my Cories get a bit backed up if they were to be fed them all the time
EDIT: The frozen ones I get are pretty small but I understand some Brine Shrimp can get up to 0.5 inches. My Cories wouldn't even consider eating them otherwise.
This might help you a bit...
http/www.fishforums.net/index.php?/topic/209271-brine-shrimp/