I have a 10g that currently has a male betta and I'm about to add six harlequin rasboras. Right now I'm looking for something to cover the bottom. One factor I'm looking into is algae control and the fish I'm considering are otos, but the problem is that while easy to find, stores have trouble keeping them in stock because they run out quickly. Plan B would be to buy some Amano Shrimp for the algae, but I would also like to buy a catfish, cory or not, and would like to know which one would be the right size for a 10g. I would like to get a few pygmy corys, Venezuelan, regular or another one, but I'm not sure where to find one and I'm not sure how many people have actually heard of them, plus I doubt PetSmart and PetCo sell them, so if anybody can point me to an online store that does, please do.