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Can anyone I.D this algae?


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Possibly Caulera sertularioides (had to look that spelling up 🤣). Green feather algae. It usually stays shorter and grows horizontally looking like a fern. I’ve only been lucky enough to run across it once a few years ago. I could not get it to thrive ☹️

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On 6/28/2022 at 10:57 AM, Guppysnail said:

Possibly Caulera sertularioides (had to look that spelling up 🤣). Green feather algae. It usually stays shorter and grows horizontally looking like a fern. I’ve only been lucky enough to run across it once a few years ago. I could not get it to thrive ☹️

Caulerpa sertularioides is a marine macroalgae that spreads up to 6.5’ across but each frond usually only gets a couple inches tall.  I like that stuff but it’s not this stuff.  I wish I had a better idea, but it’s not a Caulerpa.  Some Caulerpas can adapt to brackish but won’t grow in fresh as far as I know.

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On 6/28/2022 at 8:57 AM, Guppysnail said:

Possibly Caulera sertularioides (had to look that spelling up 🤣). Green feather algae. 

I’m positively stumped! All the algae on the mighty googles that looks close is marine. I just realized. Either way if this stuff coats my rocks I will be a happy clam

 

there is a whole lot of thread algae in the tank as well

Edited by Biotope Biologist
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On 6/28/2022 at 9:10 AM, Odd Duck said:

Is this in a salt or brackish tank?

Freshwater. It’s in my alpine creek tank no heater water stays at around 75-78 degrees. Here the pH is consistently around 7.0 with low calcium.

 

here is another pic of it this morning. Really doesn’t grow fast. That tuft is about 5-7mm tall.

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On 6/28/2022 at 11:09 AM, Biotope Biologist said:

I’m positively stumped! All the algae on the mighty googles that looks close is marine. I just realized. Either way if this stuff coats my rocks I will be a happy clam

 

there is a whole lot of thread algae in the tank as well

We must have cross posted there.  It is very pretty.  If it stays fairly short, what a great look that would be to have it cover some rocks!  I didn’t have any luck on ID either.  Ran across the Bryopsis group, which looked VERY promising for a match until I realized they’re also only marine to brackish.  I’m stumped.  Keep searching.  Inquiring minds want to know.

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On 6/28/2022 at 12:08 PM, Odd Duck said:

Caulerpa sertularioides is a marine macroalgae that spreads up to 6.5’ across but each frond usually only gets a couple inches tall.  I like that stuff but it’s not this stuff.  I wish I had a better idea, but it’s not a Caulerpa.  Some Caulerpas can adapt to brackish but won’t grow in fresh as far as I know.

So much for google helping me with science names. 🤣

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On 6/28/2022 at 11:32 AM, Guppysnail said:

What I had like that was just called green feather algae. I apparently looked up the wrong thing for the green science name. I’ll keep looking. 🤣

I’m stumped, too.

On 6/28/2022 at 11:36 AM, Guppysnail said:

So much for google helping me with science names. 🤣

Yep.  Google is both a blessing and a curse.

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I think it’s algae. Other than Curiosity does it matter. I personally think that it will be hard to ID. Here’s why, I have moss in most of my tanks including 2 tanks with moss covering the whole of the substrate and one in which there is no substrate just UGF covered in moss. I have one tank that is all the same moss taken from the yard and in different parts of the tank it looks different to the point you would swear it is different. If it’s algae it doesn’t have to be bad. I think it only becomes bad if it causes a problem or you don’t like it. I have videos I posted of discus just eating algae all day. It would be cool to know. I’ll take some pics when I get home to see if I can match. I have what I think is Beautiful algae. 
  
here are a few pics of moss and algae from my tanks. I tried to get ok pics but I could not zoom as much as I wanted. Sorry about the circle they where from a post I’m had a few months ago.C86CD624-A7AE-4F13-B137-3BB8B2BE66C4.jpeg.5abf8670413c911cb30cbe5dcf2b610f.jpeg3B70470D-44FD-4CD4-AEEB-76419BF94C4F.jpeg.518c91cf427d8f8eaadbfe450accc9f2.jpeg9669D757-6C56-437A-AF58-76128DDC1F98.jpeg.e14fee8e9457dec87de2f24b6570aae3.jpegD9A0A3EA-0110-455F-A472-A8CD3336BACB.jpeg.fff56c97c89d71beb77c270d326d8bd7.jpegE7BD0D46-872A-4134-AFA3-6DB58D38833B.jpeg.1c5b5776b11d4a1809d80484119665ca.jpegC53E08F9-05AA-4985-980F-C16D8B61C198.jpeg.c2f6dab3ee053719bfdce75457afac4b.jpegA01843A8-5BB2-459C-B778-C09B561FA66B.jpeg.c1963c07d60ab0df874a4d9aa9f22de7.jpegD67572D1-B7CD-4EED-9170-8BF21777EEAA.jpeg.3280ddf9424af1f6321df4a42fd1b95e.jpegD186CCEE-0397-4964-A2FB-BF07D2BA0D2B.jpeg.00932e60ab76710ad1ccae8c682a0db5.jpeg0F46D0F2-5E8F-4839-9892-E0D81525F599.jpeg.ac37c280757c6ec23e5a3db947af78d1.jpeg

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On 6/28/2022 at 9:23 AM, Biotope Biologist said:

here is another pic of it this morning. Really doesn’t grow fast. That tuft is about 5-7mm tall.

Could it have been introduced via hardscape or has the tank been established for a while?

I think it's a type of moss of some sort based on structure it is showing, but entirely guessing.  Coloration looks slightly pale for most mosses.

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  • 2 weeks later...

@Odd Duck I think you are right! Looking at some articles I found Cladophora glomerata. It looks like this algae comes in multiple forms and I appear to have 2. At first I thought my other algae masses were thread algae, but they are highly branching under closer inspection. 
 

I leave it in as the white clouds are using them as breeding mats right now

 

Thanks again!

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