This is a mongrel recipe, combining my favorite flavors from Italian cioppino, Spanish Zarzuela, and French bouillabaisse. It gets a smoky kick from fire-roasted tomatoes and Spanish Pimenton, plus some heartiness from added chorizo. This ain't a cheap dish. Nor is it simple. While it's a one-pot dish, it does take a lot of staging to make sure everything is cooked properly. Your guests will thoroughly enjoy it, and the tired cook will be quite satisfied.