Thread: Can someone Detemine what kind of fish this is?

I bought it at a local petstore and they said it was a goldfish but not specifily the type of it and yet im having second thoughts about it not being a common goldfish what kind of goldfish can this be? this is my first to c this kind.
(here are some links as followed)

http://i9.photobucket.com/albums/a96/Mark12_/fish001.jpg

http://i9.photobucket.com/albums/a96/Mark12_/fish002.jpg

http://i9.photobucket.com/albums/a96/Mark12_/fish003.jpg

http://i9.photobucket.com/albums/a96/Mark12_/fish004.jpg

comet

he needs 50 gallons minimum

I think thats a type of koi. They are longer and slimmer than common goldfish.

That's a sarasa comet.

pond/ comet goldfish.