Darn.
I'm sorry, its a harsh lesson and at least the goldfish is in a better place now.
Pet stores are one of those living embodiments that seem to contradict what they do for a living.
Its an all too common occurance and many, many people have fallen for the salesman patter at the pet store as its one of those logical train of thought that well "they sell fish and stuff for a living so they must know what they're doing" not so sadly!
This is one of the things that I and others have repeatedly warned members not to believe everything that the store owners and staff say.
It's basically everyone's own responsibility to do their own research and homework. I've always said that one of the best steps to take is to ask for advice before startign or commiting to anything.
This thread is very, very good for all those who read through this and learned a number of things, so its not all bad in the end.