The 3 different kinds of fish represent the progress of the study item:

• You get a blue rookie fish when you have chosen the right answer out of four answer options
• You get a red junior fish when you have spelt the study item correctly, without having listened to the answer beforehand.
• You get a golden master fish when you have learned the study item permanently. Learning permanently implies that you have spelt the study item correctly at least two days in a row, without listening to it beforehand.

The course is completed when you have learned all study items permanently, meaning that you have collected all the golden master fish.