This riddle has been around for some time on internet platforms such as Instagram, Facebook, and WhatsApp, and many people still argue over what the answer might be, as there are many possibilities. The correct answer is 4 days with good ratings, 1 day with fair rating and 2 days with bad rating. With that rating, he has to catch: 4×9 + 1×7 + 2×5 = 53 fishes.