ID help. Acetabularia?

[sweat90lx]

I have this green macro growing in the corner of my seahorse tank. It seems to be growing straight up where it is. I think it may be acetabularia because it has branches and small cups.
Just looking for an ID so I can make sure I can keep it growing.

 

[Jay Hemdal Verified Community Expert]

IDK - I've only seen one species of Acetabularia, and that one has larger cups, and the stems arise from a base, not off of each other like that.

Jay

 

[TriggerFinger]

The picture angle is not the best but I don’t think it’s the mermaids cup, that grows in a different format.

 

[sixty_reefer]

Hi, that’s caleurpa racemosa

 

[sweat90lx]

The small cups are way it branches are why I think it isn't acetabularia.
I don't think it's racemosa because its not round or in clusters.
Hard to get clear pictures because it's in the corner but maybe these are better.

 

[sixty_reefer]

Hi, that’scaleurpa racemosa

The small cups are way it branches are why I think it isn't acetabularia.
I don't think it's racemosa because its not round or in clusters.
Hard to get clear pictures because it's in the corner but maybe these are better.

Sorry still racemosa

Caulerpa racemosa - Wikipedia

en.m.wikipedia.org

 

[sweat90lx]

OK. Well that is it. Lol.
I was seeing racemosa as round and bunches like grapes.
Thanks!

 

[sixty_reefer]

OK. Well that is it. Lol.
I was seeing racemosa as round and bunches like grapes.
Thanks!

thats racemosa also, there’s a few different shaped algae’s under racemosa.

 

[shwareefer]

My avatar is acetabularia from my tank. Sprouts once a year, lives a month and then disappears till it sprouts again next year. I usually forget I have it till it's back. This particular one is 3 inches tall and the cap is 5/8" diameter. Hard to miss or mistake..