The candlefish, also know as eulachon or oolakan, is a small (12 to 15 inches), salt water fish found along the northwest coast of North America. They are related to smelt, and are used primarily as a food fish. But candlefish also have another unique use by Alaskan and north west U.S. Native Americans. The fish are so oily that a thin strip of bark can be inserted into the dried fish and used as a candle or torch.