As we don't know the specific 'two fisherman short story', the main characters are likely the two fishermen themselves. They are probably the focus of the story, and the events and interactions would revolve around them.
The main characters are the fisherman and the little fish.
The main characters are the fisherman and his wife.
The main characters are the fisherman and the king, of course.
Most likely the fisherman himself would be a main character. There might also be other fishermen he works with or people from his village who are affected by the events in the story.
The main characters are the fisherman and the little fish.
The main characters are the fisherman and his wife. The fisherman is a simple man who catches the magic fish, and his wife is the one with all the grand and greedy desires.
The main characters are the business man and the fisherman.
The two main characters are the fisherman and his wife. The fisherman is the one who catches the magic fish. His wife is the one who makes all the wishes.
The main character is likely the fisherman himself.
The main characters are the rich man and the fisherman.