I normally don't like getting groups of the same fish, as I tend to think of them as pets and give them names etc.Only one then? A group would keep them more active and swimming. Nice purchase. I can see U got the bug Peter!
I certainly have gotten the bug over the last year, right now I am working on getting a 300+ poly tank runnig by 2020. If that doesn;t happen hopefully a 180 or another 125 will be happening in the next few months