worms

[bignose]

I have these orange/brown worms in my tank. They are small and live in groups but they are everywhere in the rocks and sand. From what I've observed they cause no harm to anything in fact my tank is very clean, they seem to grab anything that hits the rock/sand to eat. I think they are spaghetti worms but I'm just guessing.

I don't mind them because they clean my tank but my GF hates the look of them. What are they? Are these worms bad? Should I have a fish to keep their populations in control? If so what fish would I need?

Sorry about all the questions just need to nip this problem in the butt before it gets out of control.