I discoverd a similar animal as well.. two actualy, one a white worm 1/4" in length and a smaller red one about 1/16" so tiny you could easily miss it. Again it was attracted to my small flash light I was using to feed my Sun Coral.
Was really weird.. As soon as I moved the light far enough away they would float to the bottom and just do normal stuff then if I bring the light back.. boom! crazy swimming at the light.. They would follow it everywhere..
Anyways.. I don't see any harm in it so far.. so.. let em be I think.
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Chad
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