OMG, that is horrible. Poor fish in a ten gallon tank. While watching that video, I clicked another by the same person showing that fish in a 20 gallon tank. Too bad that the tank came too late to avoid permanent damage due to poor water quality and the stress of being in a tank that was far too small.
http://www.youtube.com/watch?v=ppjcO-SV4MY&NR=1When I first joined this site some while ago, I had three Goldies. They were "feeder" goldfish that my husband and I took a fancy to. We had them for a short while, in a 29, knowing that we could not keep them for their entire lives. Two were Commons and the third was a Comet, and we knew that a tank large enough to house the three of them once they hit a foot or more was beyond out means. So they went to a gal who has a very large, very well maintained outdoor pond. She fell in love with our boys, Dart, Impulse and Flip, and said that they were the healthiest looking goldfish she had ever seen. It helps that my husband is a die hard fish researcher and we have a number of other tanks of fish (Oscar, a wide variety of South American Cichlids, Tetras, Hatchetfish). Water changes are not something that we are shy about doing and we know proper stocking patterns.
We recently picked up a nice used 55 (in great shape) for $6 at the local thrift store. I have been wanting goldfish again, so my husband set aside his plans for the tank (since he already has 4) and let me have it for goldies. He even drove me to the store and picked one of the fish out. We got 3 Fantails. One is a beautiful pearl white about 2 inches long (including tail). One is a calico and about and inch and a quarter long. The third is a bronze that my husband thinks may be a Moor as it has "Googly Eyes" as he calls them and has a smaller, more triangular tail. This one is not even an inch long...tiny cute little goldfish baby.
These three fish are in a 20 gallon long for now, being observed for any signs of disease and to let them grow a bit before putting them into the 55. Yes, 55 gallons will be a bit small for 3 fully grown fantails, but like I said, water testing and water changes are not new to us. We keep the nitrates in all of our tanks below 10ppm, usually no higher than 5 to 7ppm before water changes. My husband is fanatical about fish care, and says that healthy fish start with healthy clean water.
Sorry this turned into a novel.
Deb