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FAQs about Red Algae/Rhodophyte Identification 10

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Related FAQs: Red Algae ID 1, Red Algae ID 2, Red Algae ID 3, Red Algae ID 4, Red Algae ID5, Red Algae ID 6, Red Algae ID 7, Red Algae ID 8, Red Algae ID 9, Red Algae ID 11, Red Algae ID 12, & Red Algae 1, Red Algae 2, Red Algae 3, Red Algae in General, Red Algae 2, Red Algae 3, Red Algae Behavior, Red Algae Compatibility, Red Algae Selection, Red Algae Systems, Red Algae Nutrition, Red Algae Disease, Red Algae Reproduction/Propagation, Coralline Algae, Marine Macro-Algae, Use in Aquariums, Algae as Food, Marine Algae ID 1, Marine Algae ID 2, Marine Algae Control FAQs II, Marine Algaecide Use, Nutrient Limitation, Marine Algae Eaters, Culturing Macro-Algae; Controlling: BGA/Cyano, Red/Encrusting Algae, Green Algae, Brown/Diatom Algae,


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Marine Aquarium Algae Control

by Robert (Bob) Fenner

Red algae ID     2/11/18
Hello, I wrote in many months back and you were super helpful identifying some algae for me. I hope you can help again! I have attached a photo of the reddish pink tree-like algae that is spreading like wildfire through my tank. I didn’t see anything like it in your algae ID archives... can you tell me what it is?
<I wish I could... the regular branching... I don't think this is an algae/Thallophyte, but a very pink Hydrozoan of some sort>
Does anything eat it that I could use to help control the spread? Thank you!
<There are some notable Seaslugs that ingest various Hydropolyps, but I don't know anything re this particular one. I would remove it from the system, as it may be producing stinging elements that will bother your other livestock. Do you have a microscope with a USB connection? I'd like to see some 100-200, 400 time magnification shots. Bob Fenner>

Re: Red algae ID      2/12/18
Hi Bob, I don’t have a microscope unfortunately.
<Perhaps a local fish store does, someone from a marine aquarium club>
I have tried some manual removal but ripping it off leaves traces behind that I cannot remove, and it is widespread, including my tank overflow box and powerhead. It also grows very very fast.
<Yeeikes! I wish I could tell definitive what this is. I have never encountered something this shade of pink, nor with the array of branching it shows>
Is bleaching my tank and starting over my only option to eradicate this pest?
<It may well be>
Also, can it sting fish or just corals?
<Can't tell w/o testing or microscopic looking. BobF>
Thanks again.

Identification - 2/11/2017
Your image files are too big... have been deleted. Re-size and re-send. B
re: Identification

Sorry, try these
<Hi, Chris
Jordan with you today. You have a beautiful macro-algae in the genus Laurencia, most likely L. iridescens. I'd be willing to bet you're live rock was in the Caribbean at some point and picked it up. It's a non-invasive species that I would be pleased to find in my tank.>


re: Identification 2/10/17 - 2/11/2017
Thank you Jordan!!
Good to hear. Will the Nudibranch (that photo bombed my pics, and also a hitchhiker lol) be an issue with it?
<Haha, didn't see that guy earlier. Looks to be an Elysia crispata, a beneficial herbivore from the Caribbean. You hit the hitch-hiker jackpot with this rock! It shouldn't bother the Laurencia as it prefers filamentous Chlorophyta including the dreaded Bryopsis>

Red Macroalgae ID?     8/28/15
<Seven plus megs.....?>
This is an algae update, better pictures and more samples, any ideas?
<Maybe a Botryocladia sp. BobF>

Re: Red Macroalgae ID?     8/28/15
Maybe the high res.? thank you for your time
<Heeeee! Welcome>
Sent from my iPhone
<I can't afford that. B>

Identification        1/5/15
Hi Bob,
I found something at the LFS in which they don't know what it is. They believe it is some type of algae and it seems to grow fast.. Here is the best picture i can give you.. Under the actinic lights its bright red.
Thank you again
With flash
<Mmm; appears to be a Rhodophyte... maybe a Halymenia species. I'd search through Algaebase.org re.
Bob Fenner>

red algae?     11/2/14
Hi guys,
I have a type of red algae (I think) growing in my tank.
<I do agree>
It spreads readily but doesn't seem to bother anything. It is going crazy, just about everywhere.
<And beautiful>
It pulls off easily, but it is in nooks and crannies and hard to get the base. I kind of like it, but it is driving my wife crazy. Is there anything that will eat it or help to control it?
<A bunch of possibilities. Read here re: http://wetwebmedia.com/redalgcompfaqs.htm
I have attached a picture.
<I'd offer the excess at local shops... Sell it distally to other hobbyists... perhaps through Aquabid>
<Thank you for sharing. Bob Fenner>

Macroalgae ID     7/15/14
Dear Bob, I am venturing into a reef tank and as a botanist, of course have to stock it with unusual macro algae's.
<Ah yes>
I have two I am not sure on ID, could you help?
<Can take a guess. Wish the pix were a bit larger... my vision is what it was>
I was thinking the first tow pics of the same macro might be a Cryptomenia sp?
<Possibly; yes>
[image: Inline image 1][image: Inline image 2]
And the other maybe Fauchea?
<This is my guess as well>
[image: Inline image 3]
<And another. Do (unless you already have) take a romp through the survey piece: http://wetwebmedia.com/redalgae.htm
and the Red/Rhodophyte ID FAQs files linked above>
Thank you for any help you can offer,
Rebecca A Linden
<Thank you for sharing. Bob Fenner, who, of all things, dreamed of KateG (friend and more) in and out of Avery Gallup's SDSU Phycology classes just a few hours back. Not much re macrophytes however.>

New Print and eBook on Amazon

Marine Aquarium Algae Control

by Robert (Bob) Fenner

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