darts

Hi Everybody! I'm rather new to the hobby and have slowly been stocking my reef tank (65 gal) with fish. I had 2 clowns, 2 darts and 1 watchman goby. I decided to add a Lyretail Anthias, based on my understanding that they are peaceful. Unfortunately, she likes to chase the darts. Mostly when I...

I am almost positive it is a worm, it has a white head, and redish orange to yellow body. it darts around my tank like a mad man..it wiggles and darts.. it is about 1/2 inch long. in the video it looks all white. I am trying to get my daughter to video it in the solo cup she caught it in...