It can be when you catch fish using gears that have been prohibited, when you fish in places where you're not supposed to fish, you catch fish that are the wrong size or the wrong species.
kada lovite u mjestima gdje niste smjeli loviti, ulovite ribu koja je krive  veličine ili krive vrste. Nezakonitim ribolovom se vara potrošač i također se varaju pošteni ribari,