Critter ID

Niels V · Nov 17, 2020

On a piece of coralline algae I can see tiny translucent hairlike structures (photo's below).
Can anyone help ID the critters? My first guess is spionid worms.

I glued the coralline to the rock to seed the tank with coralline (the tank started with dry rock).
Should I remove the coralline?

Any advice is more than welcome.
Thnx!

Webslinger · Nov 17, 2020

scrape the coraline of rock into the tank water and remove the frag. This will seed the tank

ReeferWarrant · Nov 17, 2020

Looks like spionids to me as well, and agree with @Webslinger

SHNICI · Nov 17, 2020

+1 for spionid worm
Usually is harmless feeding on detritus, isn't trouble maker. Don't deal with, or you are risking at the moment before you get stability in your system. Don't expose the coralline to high PAR light, can bleach easy, also isn't much appreciated to be out of the tank. You can reseed it a bit faster, if time by time you scrape from the coralline with razer blade, but don't scrape it completely (leave most of it to have it to regrow and to spread it self as well). that's the best I can say.