Fishing can be done without a license in non-prohibited and non-military areas as long as you are an amateur, using amateur and non-commercial equipment, multi-hooked lines, and fishing nets not weighing more than 5 kilograms.
The most productive fishing season in saltwater is from late summer until early winter, although this varies according to region. In summer, saltwater fish approach the shores; in winter, they retreat to open and deep waters.