I recently ended up with 2 calico fantails, and although I've kept tropical fish, I've never kept goldies before. They're very young, only about an inch long without their tail. The largest tank I could get my hands on to house them in for the time being is a 15 gallon long. I currently have 2 filters running on this tank, one rated for 40 gallons and the other for 55, as I know goldfish are very messy fish.. I'm just wondering how long I can get by with keeping these guys in a tank this size? How fast do they grow? I know the recommended minimum for 2 fancy goldies is 20+, but since they've ended up in my care I want to give them the best possible scenario with limited funds.. Thanks for any advice :)
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