04-11-2012, 10:45 PM
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I do love my goldies, so any place that spreads proper info on them is a great place in my book (unless you are beating kittens or something like that lol but not really at the ideas of kittens being beaten). Actually most of what I could tell you about goldfish could be found in either our profile of them (click the shaded name if you haven't already figured that out) or on another reputable fishkeeping site. They are rather basic, but what makes them a harder for the beginner aquarist is the size tank and water changes they need (that's a good idea for an entry, what does and doesn't make a good beginner fish). I have to do 50% PWC weekly on my 55 gal just to keep the nitrates around 20ppm and that is just with two goldfish. I know it is strange to say, but wikipedia actually has a great article on goldfish including information about their domestication. The article also has a great number of sources (some of which come from peer-reviewed journals) on goldfish. One of the only things I can tell you that you probably won't be able to find there is a good goldfish diet. New Life Spectrum is great for both fancies and single-tails. However, like all dry food it can cause GI problems in fancies. If that is the case, gel food is best. I have a ryukin that has run into these problems so I make my own gel food using a recipe I got from some fellow goldfish keepers.
About your little comet, the reason he isn't growing is due to poor water quality. Poor water quality is the main cause of stunting in fish. Stunting most often happens in small tanks because due to the high wasteload of goldfish it's very hard to keep the water good. I have a friend with one comet in a 10 gal tank, and she is doing 70% daily PWC to keep the ammonia down. Goldfish in good water with ample swimming room grow like weeds. If your little guy is over a year old he should already be pushing 10 inches. In that bowl, you would need to do 100% daily water changes. Also have you ever thought about a pond? Because common goldfish do better in ponds than tanks also most people don't want to devote a 75+ gal tank to just goldfish they would rather have oscars or discus. Also ponds are heavenly.