doormat
n.— «Average-sized fluke, sometime called “Flatties,” weigh about 2 to 4 pounds, while the aptly named “doormats” (so-called due to their similarity in size to a welcome mat) weigh 8 or more pounds and provide memorable battles for the angler lucky enough to hook them.…Large “door mats” can be quarter-filleted for most recipes or cut into steaks and grilled over charcoal or gas.» —“Fluke” Massachusets Division of Marine Fisheries May 9, 2006. (source: Double-Tongued Dictionary)