US grocery retailer Kroger has announced that beginning later this week, it will add the words “color added” to the labels of all farm-raised fish from the Salmonid family, including salmon and trout.

The company also plans to modify the labels of processed products that contain those farm-raised fish.

“Many suppliers add supplements to the food given to their farm-raised salmon and trout,” said Dr. Keith Neer, Kroger’s vice president of corporate food technology and regulatory compliance. “These additives, which are substantively identical to those naturally occurring in the diets of many wild salmon and trout, enhance the pigmentation of the farm-raised fish. While the supplements do not affect the taste or nutritional value of the fish, we are modifying the product labels to share this information with our customers.”