Looking for something to do with that extra space in your basement, garage or backyard? Aquaculture is one option. You raise fist to eat in tanks. Here's a small tank in the basement:
Here's a larger tank:
It's easy to imagine using an inexpensive above ground swimming pool as well. Or create a farm:
One common freshwater aquaculture species is Talapia. Another is Keli. There are also marine species.
To learn more, try these links: