This Mexican seafood spot on the Upper West Side serves a lot of delicious things from the sea in a lot of formats. There are lobster tacos, tuna tostadas, grilled oysters, clam chowder tortilla soup, and a variety of whole fish options, just to name a few. El Fish is run by the chef behind Toloache, Coppelia, and a few other Mexican restaurants in the city, and it’s a smooth operation that’s a bit more upscale than their other spots. That’s not to say it’s especially fancy here, but it’s nice enough to fit the bill if you’re looking for something upscale before going to the ballet or opera.