Cecil- Don't know about down south, but up here in Ontario they can. Our MNR tells me that I can't stock my pond without a permit and it can only be fish of their choosing. Also can't move fish from one body of water to another, so I can only stock fish from a hatchery, if I can find them. Didn't ask about permits when I dug my pond, (actually all I was doing was rearainging some topsoil in a low spot and got carried away)which is now about 15' deep with runoff. It has no outlet so I can only work on it in early fall but if it becomes classed as a "wetland" the red tape will flow. My other pond resulted when my driveway culvert "accidently" plugged up. It is now about 10'deep and running out the overflow that I installed. It runs into a lake so I can only stock it with fish OK for the lake(bass or brook trout).