Bitterling

The bitterling is a freshwater fish in the introduced in.

Donating to the museum
As with all fish in the, the bitterling can be donated to the museum by talking to Blathers, who will follow the donation up with a small talk.

In
Blathers will say this as the fish is donated:

After donation, the bitterling can be found in the front tank in the first room.

In
Blathers will say this when handed the small fish:

It can be found swimming around in the middle-left tank in the aquarium after donation.

In
After donating the bitterling, the following information will be displayed by its tank:

The bitterling can be found in the larger of the two left-hand tanks in the freshwater fish room.

In
Once donated to the museum, the bitterling can be found in the recessed pond in the entrance room of the fish exhibit with the soft-shelled turtle and loach.

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

Real-world information
The Rhodeus sericeus or "bitterling" is a harmless fish that lives in ponds, lakes, marshes, muddy and sandy pools, as well as the backwaters of rivers. It feeds mainly on plant material but has been known to feed on small insect larvae. The bitterling lays its eggs in the mantle cavity of mussels. The bitterlings can be found in central and eastern Europe, and are often seen in public aquariums, and can be bought for private aquariums. It is a low-risk fish (not under threat). There are also about 23 recognized species in this category of bitterlings.