Fish umbrella is an umbrella. Source: C.J.. You can't buy it, but it sells for 80 Bells. Only available during Fishing Tourney (Spring); Fishing Tourney (Summer); Fishing Tourney (Fall); Fishing Tourney (Winter).
Where to get it
C.J.: Give C.J. three of the same fish and he arranges a model of it for you; he also awards prizes at the Fishing Tourney.
