Non-clicking loach species? Do leptobotia and parabotia?

[loachgirl]

I'm doing a study of the loach clicking sound... Does anyone know any species that definitely don't click? Please let me know ASAP if you do, as I need them to compare with the loaches that click. Does any one know if Parabotia or Leptobotia have been known to click?
Thanks very much

[steffeo]

I know this is s very old thread, but was this study published somewere? anyone knows?

[Phil0110]

Now I'm also interested in this, I'll also be happy with the link.