Reefmonkey said:
How long had you been keeping fish before you learned to ask "what pH does this fish require?" How many fish that you had never heard of did you impulse buy at the LFS, and then watch die, or get big and devour their tankmates, before you learned to research better?
First fish I ever had were in a 2' tank; a group of 8 black mollies and one peppered cory. I was bought them for my 10th birthday, and all my equipment was second hand. Did I know anything about fish? No. So what did I do? I went out to my local public library and read some books about the whole thing. How much did that cost me to do? Nothing.
But then maybe that's being sensible and responsible.
I'm sorry, but it's just far too easy for people to find out information - and more importantly find it out quickly at that - for the argument to wash.
Where do LFS fit in? As I've already said: if someone asks a question, then by all means it should be answered correctly and customers should not be lied to or mislead. Stock should be labelled correctly and ideally all of this stock - livestock to equipment - should only be kept in the store if one of the employees at least knows something about it.
I don't blame a clothes store for selling me a jumper that was too small or too big because I didn't go measure my size first, I don't blame my doctor for prescribing me drugs I have allergies to because I forgot to tell him what they were, and I don't blame my LFS for selling me a fish that grows too big for my tank because I forgot to ask them its maximum adult size.
What do I do? Take responsibility for my own actions, and do something about it. Take the fish back (most stores would accept it) and learn from the mistake.
It actually concerns me that it's okay for someone to not only buy a fish they know nothing about, but then to keep it for however long until it does start growing too large without actually having read anything about it
during that time, before finally realising they've a problem on their hands. That only further demonstrates the irresponsibility of the owner.