When it comes to Mexican seafood cocktails, whether it's shrimp and octopus or shrimp and oysters, Serrano's beats the square pants off SpongeBob. This large, homey mariscos spot near 32nd Street and Shea may not be in the hippest neighborhood in the PHX, but you'll have a hard time finding its equal elsewhere in the Valley, unless it's the no-frills place that the Serrano family runs near 16th Street and Osborn. The seafood tostadas are big and heaping with the ocean critters of your choice, and the oysters are fat, flavorful, and fresh from the Gulf -- unlike the anemic bivalves one is often stuck with here in P-town. Another specialty is a whole mojarra (tilapia) served Veracruz-style in a tomato-and-onion sauce, with head and tail intact. Believe us when we tell you that when you're finished licking that fish, it'll look bonier than Mary-Kate Olsen's butt. Wash it all down with a michelada, a Clamato-based cocktail cut with Corona, and you'll be crooning like a mariachi in Mexico City, Jack.