I might have a worm problem...

[youknow2025]

I just went exploring my tank to see the activity when the lights are off and I found a black wormlike creature sliding under and around my rock then into the sand... I could only get a glimpse of the tailend of the creature so the glimpse I got didn't allow me enough time to get a camera for a picture.

Any ideas on what this could be? I looked online to try to identify it, but all the identifications are about bristle worms and flat worms so I gave up and decided if y'all could offer any help. Thanks : )

 

[youknow2025]

I just found this snail. Anyone know of an id on this.

 

[youknow2025]

Here is a better picture of the snail.

 

[youknow2025]

I caught a worm. Idk if this is the one because the on I saw first was all big and giant. However, this one is geting blacker and bigger! So maybe this is it! Can anyone tell me what this is and if I should keep it or exterminate it!?

 

[lsboogie]

Looks like a bristle worm to me. If you have a sump with a sand bed I'd throw him down there. Good sand sifter. Bad for fingers if you like to root around in your sand though.

 

[bang guy]

The Snail resembles a Cerith of some type but I've never seen one that looks exactly like that one.
The worm is a beneficial type of Fireworm, if it were me I would keep it.

 

[youknow2025]

Thanks guys! I am going to go ahead and keep them both! : )
I wish I had a sump!