yeah, the story i read in a book about Tan and his escpades up the white cloud mountain was really long and winded... not much information about there requiements, but interesting though!
Im a big fan of the WCMM, but I think the reason it has differing common names is because it's such a 'hardy' fish, that it's actual requirements are often overlooked... and therefore it is labled as anything.
I know that sounds cynical, but I reacon its true. Long live the WCMM!