gothic fish geeks
So my local animal control got a goldfish fish in at least I thought that was the case the web pages photo was really blurry and they labeled it as a cold water fish. So I decided I would go adopt it but when I showed up there was quite a surprise the supposed gold fish was a butterfly koi! and they were keeping it in a 2.5 gallon tank! I really like koi fish and couldn't bare to see him that way so I took him home. he is in a 40 gallon with 3 tiny goldfish he seems quit happy for now but I know that he needs a pond at some point. I will move him to my 65 gallon at some point but I need to cycle it first. So now I have several of questions. are there heaters large enough to heat a koi pond? I know that they are cold water fish but we can get sub 0 temperatures once in a while and I'm assuming that's too cold for them. what are the best books on koi fish? can I feed him goldfish food? what else should I know?