Pla Siew: Anyone Raising Them?

I found a couple of websites where people had Pla siew ponds. I couldn't make out if they were bred for market or wild caught. I understand that there is probably a lot of fish that get called pla siew. I think all of them would fit under the heading of rasbora, which Thailand has many kinds.

Anyhow, just thought I would check to see if any one has given it a shot. they are quite a popular delicacy where I live.

I am thinking of the ones that look like this. they seem to get to about 15 - 20cm in length.