In a large saucepan combine teriyaki sauce, sherry, garlic,
ginger, and sesame oil. Bring to a boil. Set the marinade
aside to cool for 10 minutes.
Place fish in a shallow baking dish. Pour 1/2 of the marinade
over the fish. Flip the fish over and pour the remaining
marinade on the fish. Coat entire fish with marinade.
Refrigerate the fish for at least 1 1/2 hours, turning the
fish over often.
Grill the fish over medium-high heat for 4 minutes. Flip the
fish over and grill it another 4 minutes.
Fish should flake easily with a fork when done.
Serve hot!