Hi J-P,
It was already about ten even then. I just appear to like fish that either need totally different water conditions or don't get along. It's always been that way with me: the more diverse the better
The outdoor coldwater pond was part of the house when we bought it, but I'd already dug a first liner job down south after I'd lost my parents. It's still there, at least five years after I moved to the other end of England.
I had three tanks totalling 200l or about 40g growing up. Kept at least on in my room at uni. Somehere between four and eight tanks up until maybe six years ago. Then ten or so.
Fishkeeping is a progressive disease
I do respect RTR et al for their efforts to try to get us to keep understocked species tanks. It works. All of my most successful ones have been just that...
Hope that answers some...