A fishing hook is a barbed or barbless, hook used to catch fish. It is usually attached to a fishing line, which in turn is most often supported by a fishing rod.
In general the hook is concealed within the bait or trailed closely behind or within the lure. There is at least one known species of fish which will bite a bare colored hook, Sockeye Salmon. The hooks are usually, black, red or pink with pink being the favored color. For Sockeye fishing, usually a flasher or dodger is rigged in front of a 12 inch to 18 inch leader with the hook attached. The flasher giving the hook a side to side motion through the water when trolled.