When it comes to fishing for big game fish, none is better than the king of all fish the Marlin. We are pretty sure that many of you would like to know what species of Marlin is the best. Well, there are only a few species of Marlin which is the most highly sought after among all other types of marlin. And if we have to decide for you, here are some of the best known ones: * Blue Marlin – It is definitely the best known as it is known to be the main species of marlin. This beautiful variety of Marlin is in fact the largest variety and has a beautiful blue-hued skin.