There are two main categories of fish: oily and white. Oily fish is higher in. fat than white fish, but contains more. polyunsaturated fat which is a âgood fatâ. and a great source of omega 3 fatty acids. (see Understanding good and bad fats). White fish is low in fat, and high in protein. It also contains some omega 3 fatty acids, but not nearly as much as oily fish.
RR or R.R., 1. railroad. 2. Right Reverend. 3. rural route.
Railroad Retirement Board. The U.S. Railroad Retirement Board (RRB) is an independent agency in the executive branch of the United States government created in 1935 to administer a social insurance program providing retirement benefits to the country's railroad workers.