I think it's crazy when you look at one of these massive fish and then look at a goldfish in your tank...
Carp are really just big goldfish!

Well, common and comet goldfish (feeders) push 18" as adults. :) Only fancy goldfish stay less than 12".

jeeesus christ that's a massive goldfish

Yeah, a lot of people think you can just put them in bowls which stunts then and kills them. Painfully I might add. :(

What, putting those big fish in the bowls?

Well people buy then when they're still young and small, and since it's been perpetuated by the media and bad pet stores (including large chain ones) they put them in a bowl. Then they're lucky if they get 5 years out of them, but these fish should live for at least 15!

Awhhh I feel bad because I like goldfish :( What if I buy one and put it in a 30gal. tank? Is that okay?

That totally depends on the variety, fancy goldfish need 20 gallons for the first fish, and 10 gallons for every added fancy. So taking into consideration the fact that they are social and should not be kept alone you'd want 30 gallons, minimum, for two fancy goldfish. These are goldfish with two tails and big stomachs like Black moors, orandas, fantails, ryukins, lionheads and the like.

Single tailed varieties like commons, comets, and shubnkins all get a lot larger and need more space. For a single common you'll want a 75 gallon tank, with 20 gallons for every extra common. So for two, bare minimum would be around 100 gallons. :)

Here are some adult common goldlfish, to give you an idea why such a large tank is needed.
http://www.pantherkut.com/wp-conten...../gold-fish.jpg
http://aquariumfishspecies.webs.com.....sh_470456a.jpg
http://www.flickr.com/photos/goldy/147842571/

I love goldfish, and really want a 90gal fancy goldfish tank. :3

Excellent guide to goldfish care:
http://www.ultimatebettas.com/index.....showtopic=4460
http://www.ultimatebettas.com/index.....howtopic=45531

Annnd more pictures of adult fish.
http://www.ultimatebettas.com/index.....showtopic=5660

Hooly crap that's a lot of space needed!

I think I'll stick to Danios.. ahhaha

Haha, yeah. :) And I love danios, I use to have some in my 20gal but switched them out for cardinal tetras. They like my super low pH better.

http://www.funny-potato.com/images/.....iggest-koi.jpg Feesh... :3

Haha, yes!! That's a big ass koi. :3

HOLY SHIIIIIIIIT O.O THATS FREAKIN HUUUGE

:3~~