magickmidget said:Just spoke to Mum about it - she's managed a lot of fish before. Since before I was even thought of.
The fish have been and still are fine. Fish won't grow bigger than the tank they're in and we're willing to get a bigger tank if need be anyway.
Also, the one with this vertical swimming deal, he was doing it while he was still in the bag. Therefore this cannot possibly tank related! We might not have noticed it while at the store. I did some googling, is it possible it's something to do with his swim bladder?
Fish growing to their tank size is one of the horrible myths in this hobby that has been perpetuated too long. Please google the word "stunting" and find out why.