Inexpensive Mexican spot serves up fresh and spicy south-of-the-border fare to a loyal Midtown crowd.. In Short At La Sirena Gorda, a lovely little Mexican seafood marisquería in the Midtown Global Market, everything is done with zest and flair. Here, whole mouth-hanging-open-and-all tilapia is served in a spicy-as-life garlic mojo de ajo sauce with rice, guacamole, pico de gallo, and tortillas for only $9.95. Top it off with a traditional hibiscus iced tea for $1.75, and suddenly the bustling spot in the MGM appears magically sun-baked and as hot as summers by the sea should be. Owner Alfonso Melendez used to own Babalu and manage the much pricier Oceanaire. But we love the easy-on-pocketbook and made-fresh-daily seafood meals he serves up at La Sirena Gorda like we love the spirit of this global market in the center of the city.