Candlefish, also known as eulachon, is a significant fish species found in the Pacific Northwest. These oily and flavorful fish have been a traditional food source for coastal Native American tribes for centuries. In addition to "candlefish" and "eulachon," this species has several other synonyms. They are called "oolichan," "hooligan," or "hooly." The common names vary depending on the region and cultural context. Some synonyms for candlefish are derived from its unique characteristics, such as its oily flesh and its use as a fuel source for lighting candles. These various names highlight the connection between this fish species and the cultural and traditional practices that have been closely intertwined with its existence.