What is that!! A R2R guide to common new tank hitchhikers.

[AcanSweeper]

Help ID please! Peanut worm hopefully?!

 

[Crabs McJones]

Help ID please! Peanut worm hopefully?!

The tentacles at the end make me think Medusa worm

 

[Reefkeepers Archive]

The tentacles at the end make me think Medusa worm

Yes, or some other kind of cucumber

 

[AcanSweeper]

The tentacles at the end make me think Medusa worm

Okay thanks! Quick google search says they're beneficial detritus eaters phew

 

[yasmin1208]

Hi guys, any idea what this could be? Never moved out of this spot but looks like a claw either opened or closed, just snapped shut when bristleworm went near. Any help greatly appreciated!

 

[OrionN]

Hi guys, any idea what this could be? Never moved out of this spot but looks like a claw either opened or closed, just snapped shut when bristleworm went near. Any help greatly appreciated!

That is a man-eating Moray!!!!
Kidding aside, I think it is a bivalve of some kind. Filter feeder.

 

[Crabs McJones]

That is a man-eating Moray!!!!
Kidding aside, I think it is a bivalve of some kind. Filter feeder.

Agree