Seafood lovers who like their grouper fresh off the fishing boat could be in for some disappointment at the dinner table. A new grouper quota is prompting federal fisheries regulators to close down commercial grouper fishing in federal waters of the Gulf of Mexico starting at 12:01 a.m. Monday, cutting off the Gulf supply of the Southwest Florida favorite until Jan. 1. Seafood dealers say grouper still will be available at fish markets and restaurants, but it will take longer to get it there from the Atlantic Ocean or Mexico and it might cost more. How fresh will it be?...