Weak electric and magnetic fields in fish orientation.
D000818:Animals; D001522:Behavior, Animal; D003201:Computers; D003463:Cues; D004524:Eels / Q000502:physiology*; D004560:Electricity; D004562:Electrocardiography; D006339:Heart Rate; D008280:Magnetics; D009949:Orientation; D012474:Salmon / Q000502:physiology*