Steelhead trout and Rainbow trout are the same species of fish (Oncorhynchus Mykiss). However, Rainbow trout are only found in freshwater whereas the Steelhead trout go out to sea, making them anadrom …

Definition of black caviar: Fish roe that comes solely from fish of the Acipenseridae family, also known as sturgeon.Definition of red caviar: Fish roe that comes from a salmonid; any fish belonging t …