Freshwater shrimp are any shrimp which live in fresh water.
This includes: Any Caridea (shrimp) which live in fresh water, especially the family Atyidae Species in the genus Macrobrachium Macrobrachium ohione, the Ohio River shrimp Macrobrachium carcinus, sometimes called the American giant freshwater prawn Macrobrachium rosenbergii, also known as the giant river prawn, giant freshwater prawn or cherabin
Any amphipod living in fresh water, especially: Gammarus pulex