Just wanted to say that I agree with everyone. White clouds are called mountain minnows because they are from cool fast flowing highly oxygenated mountain streams, angelfish are from warm slow moving rivers. The two biotopes certainately clash, and although that is not allways a problem, I think in this case it would be fatal to the minnows to keep them at the temp comfortable to the angels and at the very least a severe case of ick for the angels to keep them at a temperature comfortable to the minnows. I also agree with RTR and I think a full grown angel might even consider a white cloud DIY sushi. (I like that one). Not to mention the zipping of the minnows would stress the angels..............etc