Oh no they grow down here . I get them on st simons / Brunswick area of GA . Good story.After high school we would take a 'head boat' (for the number of people you could cram on board) to the Long Island Sound.
(we're talking North here, boys.) You would board around 6am and return 4-5 in the afternoon. The guy I went with never fished, only played poker there and back. We would reel in flounder after flounder, all day long. Good times. I'm not sure what that restaurant sells but it's a real fish and really tasty. Hell, maybe they only grow above the M/D line. They wouldn't tell me.