Strange worm ID

[George Villasenor]

Found this worm under a rock, has a pom-pom (head?) always squirming. Can I keep it or is it a pest.

 

[good.reef]

Medusa worm... Some keep them others think they're a pest.

 

[Flippers4pups]

Medusa worm. Harmless.

 

[35ppt]

Spaghetti worm, good guy.

 

[KJ]

Spaghetti worm.

 

[flsalty]

Spaghetti worm, good guy.

+1 Medusa worms don't have that many tentacles

 

[KJ]

Google Search

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[vetteguy53081]

Medusa all the way. They do get quite large in the aquarium and although reef safe can emit toxins if stressed or injured. Their skin has sticky cells that allow it to stick to any surface. They help keep things clean and are particulate feeders that dont require supplement feeding. These worms should not be kept with anything that may harm them.