8ft and 1 inch is the length of what is thought to be the largest fish ever line-caught fish. The massive halibut was caught by an angler in Norway. To bad Atlantic Halibut is on the Seafood Watch avoid list. Along with other Atlantic flatfish, halibut are still in decline. Moreover, the fishery often uses bottom trawling. The good news is you can eat Pacific Halibut as long as it is not gill-netted.