My husband and I live near Toronto, Ontario (Canada), and we don't even have one fish right now. I do grow herbs in my postage-stamp-sized back yard (mostly vertically, in converted pallets), but that's about the extent of my current growing. I'm attending a class taught by Murray Hallum in a few weeks, though, and I'm super-excited about it.
It's about 2 years until we can get started on our business venture, but when we do, aquaponics will be the backbone of the whole affair. Looking forward to learning from everyone.