Just wondering if either of those would live in peace with my fantail?

you would need a pretty big tank to keep those...and i think that our fantail wont be very happy with them either. i wouldnt recommend it

just a question, but, when you get a bigger tank for your fantail, why not buy another goldie as a buddy for your fantail, or you can just keep one fish and let the fantail have lots of tank space?

the carp are about half an inch, and out of my friends pond, i was going to keep them for a while and giv them back to my friend when the have grown a bit, But just because i cant find any golides that i perticually want, got any ideas? at first i was thinking of one of these -> red mettalic ranchu, red cap oranda or red-and-black globe-eye, but im not so sure anymore

hummm, my personal fav are orandas and ryukins, but im sure that when you visit your lfs at the right time (after you got your new tank of course), there will be some special goldie there that will grab at your heartstrings

IMO, the carp must be really fast swimmers and they will hog all the food, your fantail wont be very happy with a hungry stomach..

Have you bought a bigger tank yet? Mirror carp is basically koi and they grow as big as koi, so I don't think you should be even thinking of getting a mirror carp. The only thing you should be focusing right now is to upgrade your current set up.

Mirror carp go bonkers in tanks. I wouldn't do it.
bw
cupotea

I didn't know what a mirror carp was so I googled them. Those things are giants! I wouldn't put it in a tank with a fancy goldfish. They are torpedo shaped so will swim faster than a fantail and will leave the fantail hungry. Wait until after you get you new tank and have it cycled and then go to the goldfish section at your LFS and get the goldie that catches you eye.