[logicalyrandom]

Not really paying attention to the proper nouns used in the riddle, and combining it with the first hint, i think the game is likely to go as follows:

Autonomous mode: Bots must make a sensory connection to some sort of object, say, in the center of the field, and must 'fish' for an object, either up high or in a hole. Once Autonomous ends, the bots then must try to get similar objects from the sides of the fields, then must place then either in a goal on either their end of the field, or their opponents end of the field.

This fits the clues in the riddle and the picture of a fish.