Rainbow trout is a freshwater fish, so it can't be eaten raw. Freshwater fish and shrimp usually can't be eaten raw. They carry a variety of parasites in their bodies, and eating freshwater fish raw is more or less in danger of being infected with parasites.

Rainbow trout is a kind of cold-water pond fish of the genus Pacific salmon of Salmonidae. Rainbow trout is an important cold-water fish widely cultivated in the world. Mature individuals is named because it has a brown-red longitudinal stripe along the lateral line, which looks like a rainbow. Native to the north of North America and the west coast of the Pacific Ocean, it mainly lives in low-temperature fresh water, which requires high water quality in aquaculture waters. Rainbow trout is a kind of edible fish, which has been transplanted to many countries, but has become an invasive species in some areas.