In Fields of Mistria we have four different legendary fish, one for each season, although in order to catch them we will need to fulfill some requirements. The first one is to have a fishing rod, which we will get after the first hours of the game. The second and most important is to have fishing at level 30 and to have bought with purple chips the skill that allows us to catch these rare fish. Legendary fish can only be caught once per game and you cannot sell them either. In addition, you can donate them to the museum to complete the legendary set and receive a prize in return.