funny that i see this thread now, i just got home with two yo yo loaches that are floating and acclimiting(sp) right now. i bought them for my infestation of snails. I have had clowns for over a yr now, and they are so cool, probably my second favorite fish next to cories. But yes clowns do get big, and they like to have company, so depending on the size of your tank i would go with yo yo's.