Sweetfish

The Sweetfish is an fish that can be found in the river. It appears from July to September 15th. It will appear from 4AM to 9PM. When selling it to Re-Tail, the player will earn 900 Bells.

Location
The Sweetfish is found in the river.

The Museum
The Sweetfish can be donated to the museum. Upon doing so, the following text is given by Blathers:

"Sweetfish are migratory fish born upstream that travel to the ocean and then return to rivers to spawn.This migratory mind-set is what emphasizes their similarity to salmon. Adult sweetfish have a watermelon-like mossy smell when caught, since they eat moss on riverbed rocks. Sweetfish are very territorial and will attack rivals that encroach on their territory. Anglers use this combative nature against them by using lures made of other sweetfish."''

Quote
Upon catching the fish, the player will say the following:

"I caught a sweetfish! Hmmm. I've had sweeter!"