To make fish fly on San Andreas go to the Easter Bay Airport and search around the perimeter. There should be 3 water tanks next to each other. Between them is a heat seeker bazooka. Pick it up. Go to any beach or bit of land in the shallow end and bazooka the fish that swim by. If you hit them they will fly out of the water and swim off. This DOES NOT work on jellyfish or turtles. I am not sure about dolphins though. Jellyfish will just splash.