Can anyone ID this Algae

[MoodyManticore]

These guys have been growing from my liverock and don't know what kind of is, any ideas?

 

[Gumbies R Us]

@Subsea

 

[EnterName]

It looks like a Gracilaria parvispora due to having these obvious "segments/nodes", but it could also be Caulerpa cylindracea which grows similar tips as shown in the photo. I'm not sure about the color being shown correctly in the photo as lighting can mess with the white balance. What color does it have under natural light with the naked eye? Red, brown, green?

 

[vetteguy53081]

Its a macroalgae known as gracilaria and comes in various colors but readily eaten by tangs

 

[MoodyManticore]

It looks like a Gracilaria parvispora due to having these obvious "segments/nodes", but it could also be Caulerpa cylindracea which grows similar tips as shown in the photo. I'm not sure about the color being shown correctly in the photo as lighting can mess with the white balance. What color does it have under natural light with the naked eye? Red, brown, green?

It's translucent and dark greenish brown

 

[EnterName]

It's translucent and dark greenish brown

Okay, then I assume my initial suggestion of Gracilaria parvispora wasn't too far off. As @vetteguy53081 said it's very likely a Gracilaria species. Of course it's more or less impossible to tell you which one it is specifically but Gracilaria salicornia looks reasonably similar.

 

[Subsea]

These guys have been growing from my liverock and don't know what kind of is, any ideas?

Let’s see this under white light. Also, I see you are in Swedan, where did the live rock come from.? If it was collected in the wild, that area would give you a clue.