Fishing is an ancient practice: the diverse fish fauna of the world’s waters has been a valuable source of food for humans for thousands of years There are over 30,000 species of fish in the world. There are 91 fish species registered in Estonian waters, most of which are freshwater fish, semi-migratory fish (e.g. vimba, ide), or migratory fish (salmon, brown trout, eel). There are about 30...