Incorrectly labeled "fish oils" that burn.
Shown above are three products that are ethyl esters and are mislabeled as "fish oil". Notice that WholeFoods product real fish oil does not burn. This shows that many brands on the market are not really fish oil but are marine biodiesel fuel. I made these liquid candles to illustrate the point that your misbranded "fish oil" is not fish oil. DO NOT ATTEMPT THIS FIRE HAZARD EXPERIMENT. This is perhaps the only liquid that can be used both as a flammable fuel and a dietary supplement. Several companies are using ethanol from corn to transesterify fish offal (byproducts) to make a renewable biodiesel fuel. Guess what, the product has the same composition as your cheap "fish oil" products. If you look at the labels on the supplement facts and see that the concentration of omega-3s are between 30-70%. Did you ever wonder what the remaining composition was. Well, the compounds are fatty acid ethyl esters (FAEE) that are synthetic chemical compounds that are not found in fish. You are probably like most consumers who paid for what you thought was "fish oil" but actually got gelatin capsules filled with the flammable fuel marine biodiesel.