All I know is they are a good dither fish. They are good with Gouramis and some people said Angle fish too. ( personally never had them, but a local pet shop has them in with Various other fish.)
Thats all I know from reading around and doing some research, some cites you might like to look at are the cites that sell them online. Like Live Aquaria, or That pet place. They pride there selves in adding info on the species. You can also do a google search.
I've had White Clouds for over a year now and they've lived happily with my other tropical fish and now my betta sorority. The White Cloud is a subtropical species and in the wild they're normally in waters between 64-79 degrees. So they would be fine. I really enjoy them. :)