Posted: Tue May 02, 2006 9:20 pm
ANY fish can carry parasites. Goldfish are not unique in their parasite-carrying ability. If you feed guppies, minnows, mosquito fish, etc, all of those may be carrying a parasite.
In addition, when one buys fish from a large pet store or fish-breeding operation, all the water from all the various tanks is filtered through one large filter system. Any water-borne illness or parasite that one fish has, all the fish have been exposed to and therefore might have. So, the guppies in that store have been exposed to whatever the goldfish are carrying.
You are right, goldfish are fatty, which is why they should not be fed all the time. But being fatty does not make them unsafe to eat in general, and they are no more likely to be parasitized than are any other fish.
I used to be a reptile expert. Now I'm just an old turtle lover.