Human exploitation of fish populations is virtually ubiquitous on earth and since ancient times has benefited humanity for food, income or other objectives such as “fun”. If fishing is conducted for non-commercial purpose during free time (as opposed to working time), and is subjectively defined by the individual as being leisure, this type of fishing can be termed recreational or leisure fishing. Recreational fishing has a history as long as human civilisation itself, and is becoming increasingly important around the world, primarily in industrialized countries, but also in developing countries. In most “developed” or industrialized societies of the temperate regions, recreational fisheries have long represented the major use of aquatic wildlife, thus constituting the dominant fishing activity in surface waters. With the objective of catching aquatic animals, primarily fish, recreational fishing is predominantly conducted by angling methods, i.e. line fishing using a hooking method. Thus, in Western societies recreational fishing is typically used synonymously for (recreational) angling, simply because non-angling recreational fishing methods such as gill nets are used only locally, e.g. in the Nordic European countries.