ITS' PROBABLY NOT RED SNAPPER

Nearly 60 percent of the tuna sold at restaurants and grocery stores in the U.S. is not tuna, a DNA study by the group Oceana found. Most of the mislabeled tuna was in fact an extremely oily fish called escolar, known to cause diarrhea. The same study found that red snapper was misrepresented 87 percent of the time.
Los Angeles Times