C.J. is the character who holds the Fishing Tourney in Animal Crossing: New Horizons.
C.J. is a young beaver and a fishing influencer who visits the island for seasonal tournaments. During the event, players have a limited period to catch as many fish as possible. Each qualifying catch earns points, which can be exchanged for fishing-themed items and other rewards.
New Horizons changed the series tradition by replacing Chip as the Fishing Tourney host. Chip, an older beaver, hosted fishing tournaments in earlier Animal Crossing games, including the original Animal Crossing, City Folk, and New Leaf. That history makes Chip the most common wrong answer.
C.J. also appears outside the tournament. On regular visits, he buys fish from the player for more than the normal shop price and can create special fish models after receiving three of the same species. His partner, Flick, performs a similar role for insects and hosts the Bug-Off. Pascal is an otter associated with scallops and mermaid-themed items, not fishing tournaments.