Piscine Energetics originally started packaging Mysis in the flat pack baggies. These flat packs are available in 8oz, 16oz and 40oz.
Feeding Directions: PE Mysis can be fed to fish in frozen chunks or poured into your aquarium after thawing. If clouding is a concern, rinse PE Mysis under cold running water or thaw in water and then pour off water prior to feeding. Please remember to not to over feed. Only feed as much shrimp as your fish will eat in 2 or 3 minutes. Remove any uneaten food.