Abstract: A fish locating system combines the functionality of a remote controlled miniature electric boat with an underwater sonar system. The watercraft is provided with a sonar transponder attached to an exterior deck. The sonar transponder wirelessly transmits sonar readings including bottom depth and terrain, schools of fish, underwater obstructions, water temperature, and the like, to the watercraft's wireless remote controller's display screen. The remote controller comprises a display screen that visually depicts the sonar scan in real-time. In use, a person can be on shore or on an anchored boat while performing underwater reconnaissance.