As any aquarist knows, certain fish are much more needy than others. I didn't know where else to post this, but what do you all think is the all time most tedious fish to care for in freshwater? There are plenty of saltwater fish that are hard to care for, but what about freshwater? I can't really think of any freshwater fish with ultra specific caretaking parameters. I was thinking of setting up a tank for a species of this nature, what are some suggestions?