I have never heard of anyone in the US stocking sturgeon. Is that common in Latvia/Europe?
Stocking sturgeons is something new for us and such thing is going on only for some years. But even more fishkeepers think about getting some sturgeons.
As far as I know, they don't need much. They can easily live together with carps... Of course, they won't live in a tiny pond or in a swamp with no oxygen but, in general, many ponds can be suitable for sturgeons.
Mostly they are grown for eating. Many of them can be found in
ponds for fee - you catch some fish, pay for them and take them home.
I added a video from one such
fee pond (that lucky guy isn't me). Usually jigging isn't the right technique (better try corn or a shrimp on the hook) but this guy wanted to do it in a different way
http://www.youtube.com/watch?feature=player_embedded&v=gZB35Z4BBbE