First, now if this is the case, according to your cat-eLog it says that it'll get to about 25cm. I've seen such a wide range of sizes of this particular one that I don't know what to think! Can anyone verify for me what I can realistically expect?
Secondly, I would like to know what it's ideal tank would be. We're going to be purchasing a 300L/approx. 80US Gallon tank for our other fish that are going to be outgrowing our 65L/14 USGal (re: 2 angelfish and one gold gourami). And my husband does not wish to part with this fish although I believe it won't be ideal to put it with our other tropical fish in a planted tank as it would uproot them by accident. So I'm researching to be absolutely sure of it and if he is unlikely to be happy in our set-up I want to bring him back. (although I worry about this as the LFS may sell it to somebody else who is unlikely to be able to care for him properly, what should I do instead?)
Thirdly, if we indeed decide to put them with the other tropical fish for a time, would they get on? I have read of some of these types of fish actually latching on to flat-bodied fish (is this just to goldfish?). If this is the case then would it be prudent to return/or sell him?
Thank you for my rather obvious and likely repetitive questions, but I've searched high and low over the forum unable to find answers to all my questions

Jen