Thank you!

So your saying that whenever we get new fish, we need to isolate them?

I know nothing about fish They've always been my mom's.

We have always put them in with the old fish, so I guess we've been pretty lucky!

So, right now they're only in pans, how long should we leave the new water in the tank before putting them back? We're scared they might jump out of the pan!

Also the big white koi is turning red/orange all over, even it's fins