If you have never tried rock shrimp you really must. They are like tiny nuggets of lobster. Also similar to lobster in texture, but not taste, is monkfish, which is sold in long meaty medallions. I like to cook all kinds of fish in simmering liquids as soups or stews. Here I poached the seafood in a combination of fish and vegetable stocks with white wine, chopped fennel and onion, saffron and cilantro.