Dorado

The Dorado is an fish that can be found in the river. It appears from June to September. It will appear from 4AM to 9PM. When selling it to Re-Tail, the player will earn 15,000 Bells.

Location
The Dorado is found in the river.

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

"Dorado means "golden" in Spanish. As the name would indicate, these fish are gold and have black dots. They look like salmon but are very toothy, carnivorous, and related to piranha. They're such ferocious fish that other fish regularly flee from them, fearful of becoming a snack. Their ferocious natures and power make them a prize catch among anglers."

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

"I caught a dorado! I should make that my motto!"