Bristle worm or ????? HELP!!!!

[Mearle]

Not sure if these are bristle worms or what all the ones I've found are small like this one there mainky in the rocks if they are bristle worms your opinion of keeping or getting rid of them?? Also I have these little red worms or something in the last picture they are in the sand kinda picking out I appreciate want help guys thank you





New member 120 gallon few more weeks until it's done cycling

 

[maxxin69]

That is a bristle worm in the container. I would personally keep them since they're beneficial. The second is Cirratulids sp. and is also beneficial.

 

[kacrocorals581]

both look like bristle worms

 

[BigMike81]

definitely bristle worms, don't touch the bristles, they sting a little.

 

[Mearle]

Most ppl say beneficial others say if they get large enough they will eat coral im planning to have a bunch of soft coral so I don't want that anyway to keep the population under control I don't over feed maybe a large enough cleanup crew will starve them for food? Also I have herd some wrasse and arrow crabs eat them?