This is a live fish market we found in Seoul practically just across the river from our apartment. There are hundreds if not a thousand fishmongers hawking their wares under one roof. We found a restaurant in the market that would slice up the fish of your choice and serve it as fresh sashimi with a second course of fish head soup. Pretty tasty! We saw a bunch of different fish and shellfish all the Koreans were eating and vowed to be less timid on our next visit.