Goldfish

The Goldfish (キンギョ, Kingyo) is one of the smallest fish. Despite its tiny size, it is actually quite rare. It can be found in the river. It has a tiny shadow and is 15 centimeters long. It sells for the relatively high price of 1,300 Bells.

Donation to the Museum
As with all fish and bugs in the series, the goldfish can be donated to the Museum by talking to Blathers, who will tell the player a little bit about the donation.

In Wild World
This is Blathers's speech about the newly donated fish:

"Hoo, in my youth, I once had a goldfish in my room. His name was Sir Blathers. Goldfish are actually quite sociable creatures, eh wot? At least they are when they're being fed, that is. Who can resist them?"

It appears in the first tank in the aquarium.

In City Folk
Blathers will say this when handed the fish in the museum:

"Hoo now... Do you know how large goldfish can get? Well, they can grow up to... ONE FOOT LONG! The growth of a goldfish in a tank is inhibited by tank size, so you rarely see them that big, I'd imagine. Even so, our tanks here at the museum are spacious... so expect our new goldfish to make a BIG splash! ...Hoo now? Not at all funny, you say?"

It can be found in the small tube-tank in the aquarium.

Placing in a Room
For most fish, when placed inside the player's house, they appear in a fish tank. This does not apply to a goldfish; they swim in a blue-rimmed bowl with seaweed. The reason behind this is that goldfish are known as house pets.

Encyclopedia Information
Once the player has caught a particular fish or bug, they can find information about it in the bug or fish menus. Once the goldfish has been caught, the following information can be found in the fish menu:

Further information
This goldfish is the Fantail breed. It has two fins instead of one. It has an egg shaped body, a high dorsal fin, but no shoulder hump. It is the western variation of the Ryukin breed. They do not like cold water. These, like all goldfish, are commonly kept as pets, and prefer a water temperature of 13 - 21 degrees Celsius/Centigrade.