Strange worm id

[akabryanhall]

So I took all the rocks and fish out of my 90. Left it with water for a while maybe a week. Looked in it today and found a dead worm in the bottom.
I've had a few fish go missing and thought I may have had a predator. Could this be it?

 

[secretreefer]

peanut worm. should be harmless.

 

[akabryanhall]

Thanks man!

 

[David.taylor4436]

Yes that's a peanut worm, they're just filter feeders , totally harmless , I've got a good few of them in my aquarium