C.J. is a beaver who shows up periodically in Animal Crossing: New Horizons. He'll randomly make visits to your island, but he'll also host various fishing competitions throughout the year where you can earn a ton of Bells and sweet Fish Swag.
Animal Crossing's Bunny Day event has made it so that players are collecting eggs instead of catching fish or collecting materials. Here are some tips that will help you get a ton of Bells and be productive until the event ends.