Guppy

The Guppy is an fish that can be found in the river. It appears from April to November. It will appear from 9AM to 4PM. When selling it to Re-Tail, the player will earn 1,300 Bells.

Location
The Guppy is found in the river.

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

"Guppies are tropical fish that are related to killifish and live in warm rivers. They are popular fish that have been bred to have beautiful flowing tail fins. Mother guppies give birth to their babies after the eggs hatch in their bellies. They give birth at a rate that's nearly constant, so their population tends to grow rather quickly."

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

"I caught a guppy! I gotta show off this puppy!"