Thanks for the info.
acara, the Colomesus asellus look awesome, sort of wish those were the ones i'm getting.
Have quite a few tanks and snails in most of them so that is not going to be a problem, and what i've read is they like to be feed blood worms so that is what I was thinking of giving them.
I believe that they are dwarf puffers (but could be wrong, they look like them) will post a pic later