Koi

The koi is a freshwater fish in the. In games prior to, it is found in rivers, and in , it is found in ponds. It can be found between 4 PM to 9 AM all year. In and, it sells for 2,000 Bells, and in , , and , it sells for 4,000 Bells.

In
In, the koi is a lucky item, meaning it gives a 777-point Happy Home Academy bonus when placed in the player's house.

Donating to the museum
As with all fish in the, the koi can be donated to the museum, followed by a small talk by Blathers about it.

In
The koi can be found in the middle-left tank, with other freshwater river fish.

In
Once the koi is donated, there is information on the board in front of the tank that houses it.

In
The koi can be found in the recessed tank in the freshwater room in the aquarium with the carp, as well as in the river near the waterfall in the main bug exhibit and the fountain in the butterfly room in the bug exhibit.

Fishing Tourney
During a Fishing Tourney, when given a koi, Chip will say the following dialogue.

Trivia

 * A koi appeared in a toy set, along with Purrl, an eel, and a fish tank.

Real-world information
The koi is an ornamental fish of the common carp variety, or Cyprinus carpio. They are found usually in private and public aquariums and they are bred mainly for decoration. Much as the goldfish, the koi is also interbred from specially selected carp. Unlike the goldfish, however, they have a common body shape, but with different colors (the opposite of goldfish). They are omnivores, feeding mainly on insects and algae. The name koi comes from the Japanese コイ, pertaining to the common carp—the Japanese term for koi is nishigikoi (錦鯉), which literally means "brocaded carp."