A week or so ago I found fresh drilled hole in my liverock, which is about a month old. The hole is about 3/8 or 1/2 inch wide. My wife so this "thing" between some rock a couple day's ago that she described as looking like a big centipede, brown in color. She only saw the middle section of it. For a couple of day's now, when the lights come on in the morning, we see as many as 7 or 8 little creatures about 1/4 inch long on the bottom feeding. They look kinda transparent except a dark back. It may be several dark stripes on his back. The tail end of it is bent under or down and it has antenna's. I was wondering if the big and little may be related and if they could cause a problem. Thanks.