Another nice botia that stays small is Botia striata. IME it's a bit shy
compared to the yoyos and it does dig up small plants in fluorite.
http://loaches.com/species_pages/botia_striata.html

I almost bought some of those. There were some in the tank with the yoyos, and
fish store guy couldn't tell the difference. I thought about buying them, too,
but I wasn't sure how aggressive they were. Not all loaches are as charming as
clowns and yoyos. Skunk botias are nasty...

Leigh

http://www.fortunecity.com/lavender/halloween/881/