How to Play Here, Fishy, Fishy!

About Here, Fishy, Fishy!, from BoardGameGeek:

My Very First Games Here, Fishy, Fishy! is a first fishing game for 1-4 children age 2+. The game can be played as free play where a kid tries to catch fishes with a magnetic fishing rod or in a game where a kid tries to catch the fish determined by the color of a die. If successfull the fish rewards the kid with a gift. Who is the best fisherman and collects the different toys first?