Probably neither parasitic nor symbiotic. Probably just a segmented worm that made the gonipora its home. I've got all kinds of tube worms on the stony part of some of my LPS. Mostly tube worms. They're not symbiotic or parasitic--they're just "there."
I won't claim expert knowledge on Goni's but I think you'll have a better chance of success in an area of moderate to low water movement, rather than high water movement.
Mine receive only moderate water flow and fully extend in that environment.
Hi all,
I "inherited" a gonipora on Friday. It has a segmented worm-like creature that lives on it. This wormy thing doesn't move all that much, but it gives an occasional wiggle. I have seen these worms in photos before. Is this worm in some sort of symbiotic relationship with the gonipora? Or is it a parasite?
Also, this gonipora isn't extending it's polyps, they are not fully retracted either. I moved it to an area of higher water flow... The guy that gave it to me said he didn't think it would "make it", but I'm determined to save this poor thing. I know they are notoriously hard to keep. Does anyone here have any experience with these?