why put the burden on the consumer? if the staff at lfs and esp at chain stores had just a tiny bit of training it would take care of most of the problem. i was at a chain store the other day buying some platies and plecos for a pond. the salesman asks me what size tank they are going into, i was actually impressed that he took the time to ask even though they were very busy. but then, as he's bagging my fish, i hear another salesman is telling a newbie customer that a few pacus and red hooks and half dozen clown loaches would be fine in his brand new 55 gal that didn't even have water in it yet, he was buying the fish and setup at the same time. i hopefully talked him out of buying the fish now. this is not the fault of the consumer, it is the responsibility of the store managers/owners to train their staff adequately. take responsibility for the animals you are profiting from. this also goes for potentially large snakes, lizards, birds, etc.