Miami has been importing quite a few restaurants to Las Vegas, recently, like Yardbird and the new Chica, and they’ve all landed at The Venetian. This latest addition has imported a lot of seafood with it. Tucked into the corner of St. Marks’s Square in the Grand Canal Shoppes, the Mercato is designed true to its name, with some 12 different market stations devoted to various ingredients throughout the space. Take a gander at the fresh pasta made in-house or a cheese and salumi selection that made us weep. A starter of roasted octopus is a must, served with the classic confit fingerling potatoes and salsa verde. There are pizzas on the menu, but the pies across the way at Mario Batali’s Otto win this neighborhood war.  We got our carb fix instead via the spaghetti frutti di mare, thin strands of fresh spaghetti spun together with ample clams, mussels and calamari in a white wine and tomato sauce. Dessert offers another show entirely with the tableside tiramisu, where your server will build your sweet, creamy treat from ladyfingers, coffee, mascarpone and chocolate just for you.  The dining room is massive, but we prefer to sit on the faux patio to people watch on the Square (though it can get loud at times when the “streetmosphere” operatic voices start soaring).