http://www.advancedaquarist.com/issues/nov2002/cw.htm
"For many years, noted authorities have suggested that keeping aquariums with lots and lots of miniature species, eventually bound upon survival to compete with each other in a small closed volume of water, was asking for trouble."
"For many years, noted authorities have suggested that keeping aquariums with lots and lots of miniature species, eventually bound upon survival to compete with each other in a small closed volume of water, was asking for trouble."