As some of you may already know, 3 of my 4 fairly large bala sharks died in late October 2010, and I haven't been able to find replacements for them since then (the new balas would have to be 7"+ to avoid being eaten or killed, and it's not easy to find them at that size in KY), so I was wondering if I could just buy some large tinfoil barbs to school with my remaining bala shark, since tinfoils are usually readily available at 7"+ around here (I'm not sure how much they cost at that size, though). What do you all think?