I think the oil in my canned fish is fake olive oil. I've been eating canned sardines in olive oil from several different brands every day for about a month now. My shoulders and ribs (do we have joints in our ribs??) have been getting stiffer and there's all kinds of popping and cracking going on. I had joint pain issues before I went primal and thought it was sort of a miracle that they went away. Then someone told me the joint pain cleared up because of the lack of cheap vegetable oils. So I think this new cracking and popping might be an indication the oil in canned fish is fake.