Yet another invert ID

[jgranata13]

It seems like I'm discovering a million new hitchhikers all of a sudden, even though I haven't added any rock to my tank in nearly a year! This one, though - I have no idea where to even begin looking. Any ideas?

http://youtu.be/VxcBeGUO_Ug

 

[Genera]

A mysid? I've seen those things in night dives with the lights on, along with lots of other critters. Kind of light how when the sun shines just right you can see the dust particles in the air. Whatever it is I don't think it does any harm, check with other people though.

 

[Sugar Magnolia]

That's an epitoke, part of the reproductive cycle of polychaete worms. Harmless.

 

[jgranata13]

Thanks!