Another ID please

[simsimbalabim]

These popped up about a month ago. Think it's some kind of algae. I've never seen it before, though. Any ideas?

 

[simsimbalabim]

Another pic

 

[powdertoastman]

almost looks like some sort of worm or spong, try to get bang guy in here, he should know.

 

[simsimbalabim]

 

[simsimbalabim]

Let try that again...

 

[bigarn]

The green sprouts look like club algae.
The round marble in front is bubble algae.

 

[kahnsell]

I have a few of those things too! They are bizarre... What are they? Call Agent Mulder...

 

[simsimbalabim]

Just did a search on Club Algae...that's it!!! Thanks, bigarn!
Yeah, I know that's bubble algae---know it all too well...

 

[etd5862]

The algae you have pictured looks more like a Neomeris annulata to me. I have this in my tank; it is from Hawai'i. It can appear singally, or it may spread in to clumps. You will find the top will be a nice green color with radial hairs, and as the algae grows, the bottoms will look white and appear calcified.
The club algae is a form of valonia (bubble algea) and will still have a single finger-like bubble. Look at the algae in question and see if it is solid with little hairs, or if is a cell-like or hollow-looking entity.
Simsimbalabim, is yours from Hawai'i too (if it is indeed Neomeris sp. ), or do you know where it came from?

 

[simsimbalabim]

It does appear solid, with little green hairs. Unfortunately, I don't know where this rock came from. It's the skeleton of some zoo colony, I think.:notsure:

 

[bang guy]

Neomeris annulata aka Club Algae aka Spindleweed.
It's a harmless calcareous algae. It can actually be found on most rock from the South Pacific.

 

[bigarn]

:yes: :yes:

 

[etd5862]

Sorry, I didn't mean any disrespect to you, bigarn. I guess that's the problem with common, names, eh?-- The only algae I could find with a common name of 'club algae' was a Valonia sp. . When I ID'd it in my tank I found a reference for it ( Neomeris annulata )labeled as spindleweed, but not club weed, so it didn't occur to me there was another common name for the algae.

 

[bigarn]

No offense taken....This is the purpose of this forum. Nobody should take one person's opinion as the answer to their question.
There are many knowledgeable people here, and I'm sure everyone has helped answer someone's question at one time or another.
I'm sure you are one of those people.
bigarn