omg i was watching and there i saw it, the same group that was to scared to eat were breeding! no idea how i got them to breed, but yesterday i added a bubbler and used the valve to turn up the current so high that everything is being shoved to the side of the tank, can't belive that it worked, you might think the current was a stupid idea but i heard that they came from streams and rivers, but i just thought it would make them eat, but never breed!!