What is this?

[Zerokyr]

We have these white tentacle looking things growing out of our green star polyp that we got about 2 months ago. They started showing up about a month ago and have slowly been multiplying. The green star polyp has also not been opening up as much since they’ve started appearing. I also saw one of them detach from the polyp today and very slowly move around on the sand. I didn’t get a picture, but it looked like the tentacles were just connected to a long body and there appeared to be tiny antenna’s on the ‘head.’ Can anyone help identify these?

 

[Chrisv.]

Any chance you can get a photo under white light?

 

[Zerokyr]

Any chance you can get a photo under white light?

Yeah sorry. Girlfriend has the app to control the light on her phone and didn’t want to change the light for me lol. Is this one better?

 

[Chrisv.]

Yeah sorry. Girlfriend has the app to control the light on her phone and didn’t want to change the light for me lol. Is this one better?

Much better pic, but I'm not sure what it is!

There are plenty of stories about GSP changing color to silvery or tan/brown. But those look more like anemone tentacles to me. But they don't look all that much like aiptasia, which tend to have more pointy tentacles.

Anyone have any other thoughts?

 

[Zerokyr]

Much better pic, but I'm not sure what it is!

There are plenty of stories about GSP changing color to silvery or tan/brown. But those look more like anemone tentacles to me. But they don't look all that much like aiptasia, which tend to have more pointy tentacles.

Anyone have any other thoughts?

I was thinking something along those lines as well at first. Someone else suggest possibly majanos which looked kind of similar, but after it disconnected from the polyp and I saw its stick-like body and what I assume are antennas I have no idea what it could be.

 

[Reefer Reboot]

Have we ruled out nudibranchs?
See the following article,

GSP eating Nudibranch?

www.thereeftank.com

 

[Zerokyr]

Have we ruled out nudibranchs?

I couldn’t find any that looked like them, and its body was as thin as one of the tentacles which seems a bit off from the pictures I’ve seen of nudibranchs. I am very new to this though, so I could be wrong. It may be worth noting we were surprised with a dolabella sea hare one day shortly after buying the polyp.

 

[Zerokyr]

Have we ruled out nudibranchs?
See the following article,

GSP eating Nudibranch?

www.thereeftank.com

Just looked at the article and that does look exactly like it. Wish it had the name of it, but it’s good to finally have a lead!

 

[Reefer Reboot]

Phyllodesmium briareum

Is this GSP ok or should I be afraid?

I got 2 beautiful GSP at our neighborhood coral store. One flowing green and full. The other.. I’m concerned. Should I be? (See picture 2).

www.reef2reef.com

 

[ying yang]

My first thought was a nudi also and if on your gsp then that's what it eating if is intact nudis.

If so would need keep pulling them off and scrape any eggs you find off,or keep pulling as they hatch into nudis.

Never had any nudis but I read often most if not all very specific in what they eat so if take away their food source they eventually die.but read before and in thread shared here that a soft coral eating nudi ,know your job to research what soft coral it eats,but if on a coral you can conclude its eating it I would of thought.
Some wrasse eat alot of these things.but would need research what wrasse eats what or more likely to eat them and if compatible with other livestock in tank plus if your tank big enough for said wrasse.

If was me,I would be getting some tweezers and try pick one off and put in a small container with water and see if moves,then if so probably nudi

Good luck

 

[Chrisv.]

Did you dip them before you put them in your tank? Can the rock be removed and dipped? Dipping and seeing them fly off would be a pretty convincing "it's a nudibranch" argument.

 

[Zerokyr]

Phyllodesmium briareum

Is this GSP ok or should I be afraid?

I got 2 beautiful GSP at our neighborhood coral store. One flowing green and full. The other.. I’m concerned. Should I be? (See picture 2).

www.reef2reef.com

I think that is exactly it. Thank you so much for all your help! You’re a saint

 

[Zerokyr]

Did you dip them before you put them in your tank? Can the rock be removed and dipped? Dipping and seeing them fly off would be a pretty convincing "it's a nudibranch" argument.

I have not dipped them, but after seeing some previous replies I am pretty sure we got it narrowed down to a nudibranch. Thank you!

 

[Chrisv.]

I have not dipped them, but after seeing some previous replies I am pretty sure we got it narrowed down to a nudibranch. Thank you!

Time to dip! You want to get rid of these.

 

[vetteguy53081]

Pics are fuzzy but looks like either yellow polyps or aptasia but hard to tell

 

[Zerokyr]

Time to dip! You want to get rid of these.

We are definitely going to start working at getting rid of them. Thank you!

 

[EeyoreIsMySpiritAnimal]

Do they bother anything besides GSP? They're kind of cool looking!

 

[Zerokyr]

Do they bother anything besides GSP? They're kind of cool looking!

So far they’ve only been eating the polyp, but it seems like they are starting to move around a bit more as of today. Our tank is fairly new though, so there’s not too much for them to mess with yet

 

[SaltyAllergy]

We have these white tentacle looking things growing out of our green star polyp that we got about 2 months ago. They started showing up about a month ago and have slowly been multiplying. The green star polyp has also not been opening up as much since they’ve started appearing. I also saw one of them detach from the polyp today and very slowly move around on the sand. I didn’t get a picture, but it looked like the tentacles were just connected to a long body and there appeared to be tiny antenna’s on the ‘head.’ Can anyone help identify these?

It looks like a Galaxia Coral to me