Well, thanks to the article in this month's Fishlore, and the thread here:
7 Siamese Algea eaters!!!!
I was well equipped to identify some SAEs at the
LFS. It helped that they were labeled as such, but armed with the info, I was able to assure myself that they were SAE. So I bought 2 and they seem really happy in my tank.
They're actually pretty cool looking fish-shame that they're so hard to come by.
By the by, if you're in the Buffalo NY area, The Fish Place in North Tonawanda really seems to know their stuff. It's kinda like a comic book store in that they only hire true fish nerds, but everybody is really helpful there.