Common sushi fish include SALMON and EEL. SALMON is a pink-fleshed fish that is found in the Atlantic, Pacific, and Arctic oceans. It is a popular choice for sushi due to its mild flavor and firm texture. EEL is a long, slender fish that is found in both fresh and saltwater. It is often served as unagi, which is grilled and served with a sweet sauce. Both SALMON and EEL are popular choices for sushi, and can be found in many sushi restaurants.