It moves pretty fast like a planaria. I have a video of it if it'll help. It came from an sps frag.. not sure if it was eating my acro or if it was just on the plug.
They are not aefw, but it does not mean not to worry about it. I would set up a qt if I was you. It appears you are trying to sell corals and bringing omg wild corals you will absolutely end up with something
