;)
In this position, as shown in the drawing, the fish B, when approaching the bait s, will see the reflection B, of himself in the mirror, also coming for the reflection of the baits, and will be made bolder by the supposed companionship, and more eager to take the bait before his competitor seizes it. He will lose his caution, and take the bait with a recklessness that greatly increases the chances of his being caught on the hook.