when I was behind the tanks, feeding this morning, Mrs. thinks she saw a baby in one of the rock piles in this tank, said it was like 1/4 inch long, and striped like a panda, of coarse we didn't see it when I came around to the front, and there is such a variety of hillstream's in the tank, positively identifying would be tough, at that size... maybe someone is liking the added water changes