Please Identify- Pest or friend?

[flyfisher2]

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Is this a zoa, filter feeder, or something I should be concerned about?

 

[stephenm894]

I’m new and everything to the hobby but it kinda looks like aptasia. Take what I say with a grain of salt.

 

[Bfragale]

They kind of look like yellow colony polyps.

if that’s what they are- they are not a pest but can become a bit invasive and take over the rock they are on.

they are a common coral (or use to be a common coral lol) but I do not see them often these days.

I dont think it’s aptasia or majano.

 

[flyfisher2]

I’m new and everything to the hobby but it kinda looks like aptasia. Take what I say with a grain of salt.

I have aiptasia
This is green smaller and grows like zoas

 

[Bfragale]

p.s- they can sting near by corals too. Just be aware

 

[flyfisher2]

They kind of look like yellow colony polyps.

if that’s what they are- they are not a pest but can become a bit invasive and take over the rock they are on.

they are a common coral (or use to be a common coral lol) but I do not see them often these days.

I dont think it’s aptasia or majano.

What a relief
Thanks
Have you seen in green?

 

[flyfisher2]

Danger to the zoas they are growing between?

 

[stephenm894]

What a relief
Thanks
Have you seen in green?

Maybe colonial hydroids

 

[Bfragale]

What a relief
Thanks
Have you seen in green?

Personally I have only seen the yellow variety. The lighting may make them appear green, but under white lights are they more yellowish/brown?

 

[Bfragale]

Danger to the zoas they are growing between?

I wouldnt say “danger” but they will fight for space. In your viedo the zoas are closed a bit- that’s probally from stings from the colony polyps. One or the other will win- most likely the colony polyps lol

 

[flyfisher2]

We pulled the plug and the Mrs went to town with tweezers
Those things are toast!

 

[flyfisher2]

Personally I have only seen the yellow variety. The lighting may make them appear green, but under white lights are they more yellowish/brown?

Looks more green than yellow but I’d say yellow over brown

 

[flyfisher2]

Maybe colonial

 

[flyfisher2]

Deleted by accident
Sorry
Yes they look tubular are hard and tiny little straws
Break off easy with tweezers
I think we got most of not all on that rock
Thanks!

 

[vetteguy53081]

Colonial hydroids. Hydroids are a life stage for most animals of the class Hydrozoa, small predators related to jellyfish. Some hydroids such as the freshwater Hydra are solitary, with the polyp attached directly to the substrate. When these produce buds, they become detached and grow on as new individuals. The majority of hydroids are colonial.
You can place Kalkwasser mixed into a paste over them and they will melt off

 

[Goaway]

There's been some reports of the green fluorescents not spreading like colony hydriods or even causing the same issues.
I wouldn't know personally. I never kept any variety of them. They were all removed.