Could someone please ID these things

[dc_909]

I believe they are some sort of hydroid but not sure. Anyone have a scientific name so I can look into them futher, All the threads I have read regarding hyroids show and orangish color pom-pom look.

Kalk paste doesn't seem to be very effective. They seem to com back.


Not my pic, but I have the same thing in my tank

 

[Angeline]

Looks like aipastia?

 

[Captain Amazing]

No, not aiptasia. I have similar things in my tank. They have a hard tube like a feather duster and retract into it quickly if my hand gets too close. They don't spread from what I've seen. No idea what they are. I was thinking hydroids also.

 

[matty0206]

I believe those are called hydroids! I have a bunch and I was told by a reliable person that they sting corals but are ok if they arent to close to them! However I think they spread pretty fast!

 

[matty0206]

Her try this page just scroll down a bit
http://www.wetwebmedia.com/hyzoanidfaq.htm

 

[dippin61]

look inside the "mouth" .. if it has 4 segmented parts to the mouth, then they are a form of protozoan jellyfish. or something