msjinkzd, im talking about the regular ones, there like 1/10 of an inch long full grown, and they eat the poop at the bottom of a tank, size dont matter quantity dont really matter, as long as i have enough for them to breed. if u can get me some for shipping thatd be great, i figured someone over at arizonainverts would have responded by now and sent me some for free too, but noones been on