I've found 3 of these small worm like things. I've gotten rid of all that I've found. They aren't leaches like in the other post though (atleast I hope not). They look more like a caterpillar. Looking strait down on top of them they are an off-white color and they look like they have dark stripe down the middle. Anyone know what they are? Are they dangerous to me, my plants, or my fish? Sorry I can't post a picture, but I don't have a digital camera.