white thing?

nickloeuf · Jan 30, 2017

Hi there,

I have a few of these white '' thin hair looking '' things growing on some rocks and I actually think they are alive but i have no idea what they are, if they are good or bad?

here's a link to a video!

http://sendvid.com/39tl9x8r

thanks in advance!

redfishbluefish · Jan 30, 2017

It's hard for me to see, but is it coming out of a tube looking thing? If so, my guess is vermetid snail tentacle.

nickloeuf · Jan 30, 2017

redfishbluefish said:
It's hard for me to see, but is it coming out of a tube looking thing? If so, my guess is vermetid snail tentacle.

It is hard for me to see if it's coming out of a TUBE but it looks like it is coming out of a white '' thing '' !

xREEFINaintEZx · Feb 2, 2017

At first glance it almost looks like brittle star arm... I have a bunch that hang arms out of rocks... If you confirm its the "fishing line" from a vermetid start hunting. They spread fast and will make your tank look like poo. When you attack them you need to glue them shut or crush them at the base. Can you get a pic at some diff angle

Lionfish Lair · Feb 2, 2017

It could be a digitate hydroid, as there seem to be others in the tank. The hole/tube placement underneath could just be a coincidence.

nickloeuf · Feb 2, 2017

xREEFINaintEZx said:
At first glance it almost looks like brittle star arm... I have a bunch that hang arms out of rocks... If you confirm its the "fishing line" from a vermetid start hunting. They spread fast and will make your tank look like poo. When you attack them you need to glue them shut or crush them at the base. Can you get a pic at some diff angle

I moved a rock and realized one of them was coming out that white thing/tube... here's a picture

oneofmany · Feb 2, 2017

Does it have any sort of life to it or does it just flap around in the current? It looks kind of like the Chaetopterid worm outlined in the link below IMO. (Figure 10.)

http://www.reefkeeping.com/issues/2004-05/rhf/index.htm

nickloeuf · Feb 2, 2017

oneofmany said:
Does it have any sort of life to it or does it just flap around in the current? It looks kind of like the Chaetopterid worm outlined in the link below IMO. (Figure 10.)

http://www.reefkeeping.com/issues/2004-05/rhf/index.htm

They definitely look like they are living mhmm.. so hard to find out that they are ! urgh