Sorry about pic it was fast! Saw it for the first time today. I don't think it is a bristle worm but it might be? It is really quick, if you blink its gone. It stretched out about 5 inches and grabbed some mysis I was feeding then bolted back into its hole...I really hope it is a harmless bristle...
The head of it had 2-3 antennas.
The head of it had 2-3 antennas.
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