Hi,
I see that you have been posting on various sites in the U.S. looking for Oryzia latipes, and yes they seem to be ellusive, even though I thought they were pretty common. I have searched everywhere I know and have drawn a blank I'm afraid, but I will enquire both here and stateside to see if anything turns up.
Try contacting Peter at AquaticsDoctor@aol.com
from http/www.fbas.co.uk/Ricefish.html site. You could ask him if he knows anyone stateside.
BigC