The FDA conducted a hearing on how the salmon, if approved for sale by the agency, should be labeled. According to federal guidelines, the fish would not be labeled as genetically modified if the agency decides it has the same material makeup as conventional salmon.

Consumer advocates say it is the public's right to know genetic modification has occurred. AquaBounty, the company that has developed the fish and is applying to the FDA to market it, says genetically modified salmon have the same flavor, texture, color and odor as the conventional fish.

Michael