Hellooo? Anybody out there want to make a million dollars? Frustrated parents beg you, please open a restaurant that offers more for kids than the obligatory highchair. It would be slammed! Until then, there's 15th Street Fisheries, where diners are greeted by koi fish swimming in a pond at the entrance, and a koi food dispenser allows you to feed them. (Bring quarters.) Don't go upstairs (that's for fancy dinners) but rather downstairs to the Dockside Cafe. Once seated outside along the Intracoastal Waterway, crayons come in a cutesy tin bucket, and a kids' menu has the standards — hot dogs, chicken fingers — for $5 a pop. The best part: While waiting for your food, walk to the adjacent marina store, grab a pack of frozen bait shrimp ($3), and take them out on the docks to toss to the tarpon. (There's also a tarpon-feeding show between 5 and 6 p.m.) Your young'uns will never distinguish one Happy Meal from another, but they will grow up with cool memories of the times you went to "the fishie place." To make it even more special, arrive by water taxi.