re creature I found in the dark

[Leah]

This morning I just happened to get a glimpse of something dark in my tank,
I had just turned on a night light and just peaked in and to my wonderous
eyes saw something scoot into a tiny hole in the rock I am guessing maybe
half an inch with tentacles and maybe a small head looks almost fuzzy. I
can see it sticking out a bit from the hole. What could it be? If I didn't know
better I'd say it was a catapillar. Looks black to me.

[don.ald]

how fast did it move? could be a mantis?

[High tide]

Since you described it as "caterpillar" like in appearance, I'd say it's probably a type of bristle worm. You'd have to catch it to properly ID it.

[Leah]

it moved very quickly. Hmm bristle I dunno. Possible I guess.

[Snaz]

Originally Posted by Leah

it moved very quickly. Hmm bristle I dunno. Possible I guess.

Moved quickly? Eunicid worm is my bet.

[High tide]

Originally Posted by Snaz

Moved quickly? Eunicid worm is my bet.

Good hunch,that was my gut instinct, could be a number of other worms though.