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FAQs about Red Algae/Rhodophyte Identification 2
Related Articles: Red Algae in General,
Coralline Marine Algae, Avoiding
Algae Problems in Marine System,
Algae Control,
Marine Maintenance, Marine Scavengers,
Snails,
Hermit Crabs,
Mithrax/Emerald Green Crabs, Sea Urchins,
Blennies, Algae Filters,
Ctenochaetus/Bristle Mouth Tangs,
Zebrasoma/Sailfin Tangs, Skimmers,
Skimmer Selection, Marine Algae,
Coralline Algae, Green Algae,
Brown Algae, Blue-Green
"Algae"/(Cyanobacteria), Diatoms,
Brown Algae, Algae as Food,
Related FAQs: Red Algae ID 1,
Red Algae ID 3, Red Algae ID 4,
Red Algae ID5, & 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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Cyano? Red Hair Algae 02/05/2008
Hello WWM,
<<Hello, Andrew
here>>
My tank has had an algae problem for a while, and I believe I
am slowly taking it out. First of all, I got a better Pinnacle RO unit
which replaced my crummy tap water filter.
<<Certainly going to help
no end>>
The algae has decreased significantly, but it is not quite
gone yet. The one I notice the most is a long, thin, hair like red
algae, that grows in certain spots mainly the substrate. I wasn't sure
if this is Cyano, but I guess I won't find out until I do more water
changes and more
skimming. Is there a different between Cyano and
red hair algae? Its my main problem. Would a Phosphate reactor help
here?
<<There are a few different types of red hair style algae's
such as Gelidium, Polysiphonia and Asparagopsis. Providing a photograph
of the algae in question would help a lot to advise what type of algae
you have. And to answer the question, yes, Cyano and red hair algae's
per say, are quite visually different. A phosphate reactor would
certainly be a good device to add if you feel the phosphate levels are
high and your unable to control them yourself>>
Thanks, Joe
<<Thanks for the questions. A Nixon>>
Live Rock Hitchhiker IDs (Corallimorph and Red Alga) – 05/07/07
I purchased a new piece of live rock and a few weeks later found
this growing on a piece of dried out plate coral.
<<Neat>>
The plate was totally bleached out and dead when it went into the
tank. These appear to be some sort of mushrooms and I have no idea
what the red stuff is in the other picture.
<<Mmm yes, perhaps a
Ricordea species...and the “red stuff” is a Rhodophyte though what
species it is I don’t know...perhaps if you have a look around at
algaebase.org...>>
It started out with just one small creature
and has now expanded to at least 20.
<<Fast grower, eh>>
They are now about 6 months old.
<<Mmm, ok...not atypical for
Corallimorphs>>
There is clearly a mouth in the middle of each
one. The stalk is soft and will extend out. They look like
Blastomussa on the top surface, but as I said the stalks extend and
are soft.
<<Yes...like Ricordea>>
When they are fully
contracted the "fleshy" parts will look pink as can be seen in some
of the smaller ones. They can also blow up much larger than this
like an anemone. <<Typical Corallimorph behavior>>
The red stuff
also appeared when the new rock was put in. It has now spread over
about 40% of this rock. It is made up of many small -3mm or so
lobes. These lobes are vertically flat.
<<The red alga “may”
become problematic/spread more than you like. If this happens, your
best bet for controlling it (short of manual extraction) will be an
urchin species. Mespilia globulus is a good choice for smaller
systems or a Diadema species for large (100g +) tanks...but be aware
it has been my experience the latter will also sometimes graze on
Acroporids. EricR>> | .jpg)
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Where the Red Fern Grows - 03/24/07
Hey Guys,
Absolutely love the site. Have been lurking here for about 6 months now
and every question I have had has been answered by doing research on the
site. Every one except this one...
<Is indeed a great resource and
thanks for taking the time for looking before asking now, lets see if we
can help..>
In the last 6-8 weeks we had this beautiful red fern
"thing" grow off of a piece of Live Rock that we obtained from our LFS.
In the past 2 weeks the thing has gone gang busta on us. We are not sure
if it is ok to have in our aquarium. Could you try to "id" it for us
(sending an attached photo) and let us know if it should be removed. I
hope it won't need to be removed as I think that is very beautiful.
<Not to worry, it looks to me, and without further close-ups, like
Gracilaria, a type of red algae that is quite common in aquaria and food
markets. It's harmless to your system and I agree, adds a really vivid
colour. Although you mention excessive growth, which may be due to high
nutrient levels, and I would definitely check your nitrates here>
Thanks for all your help.
<Pleasure, Olly>
Dawn
<Also thank
you for taking the time to spell and punctuate everything correctly> | 
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Algae ID - Gracilaria textorii? Fauchea? Red Macroalgae 1/30/07
Hello WWW crew!
<Hi there! Mich with you today.>
I'm having
quite a time ID'ing this algae. I've found pics of Gracilaria textorii
that look similar, and pics of Fauchea sp. that look similar. Any
looking at the pics of Fauchea and g. textorii, I think THEY look
similar to each other!
<Heeheeee!>
HELP!
<Given the choice
between the two, my vote goes for Gracilaria textorii, though I am no
expert in algae.>
To save you pain of email attachments, I've hosted
the images I took last night on my website here:
http://www.climatestudios.com/algae/algaeid.html
<Got it.>
Any ideas?
<A beautiful red Macroalgae for sure.>
Thanks so
much!
<You're welcome! -Mich> |
Re: Algae ID - Gracilaria Textorii? Fauchea? Red Macroalgae
<Hello again, Mich here.>
Thanks for the reply.
<You're
welcome.>
I now have another opinion that thinks Delesseriaceae.
<Another possibility. I don't know if you are aware, but there are
nearly 4000 species of saltwater red algae, so narrowing down the
exact species is quite a challenge. A marine botanist would
probably be more suited for the task. I will pass along to WWM guru
Bob Fenner for comment.>
Links to 2 new pics of leaves:
http://www.climatestudios.com/algae/alg_close1.jpg,
http://www.climatestudios.com/algae/alg_close2.jpg.
Also, if
it helps, when this is pulled and left out, there is an almost
"stinging" feeling in the air. A couple months ago, I pulled a bunch
out and as my girlfriend and I were laying in bed, our eyes stung
(both of us) and there was a very strange odor. Since then, I've
tossed it outside when removed. Now, as the clump I pulled is
drying, there is the same odor, and places on
my arms where I
touched after handling it are itchy, similar to an allergic
reaction.
<Yikes! I'd recommend wearing gloves in the future.>
Link to original page:
http://www.climatestudios.com/algae/algaeid.html
To REEF
CENTRAL thread:
http://www.reefcentral.com/forums/showthread.php?s=&threadid=1032798
Thank you!
<You're welcome! -Mich> |
RMF any thoughts...
<From what I see/saw, this look/ed like a
Fauchea species. BobF> | 
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Algae et al. ID, coldwater? 1/14/07
Hi All,
Picture 1:
Last week I saw some red macroalgae I was interested in and asked what
it was, no one knew, the tank was simply marked "Red Macroalgae on
rock" I tried researching it from memory but with no luck. This past
Friday I went there and although the piece I was interested in was gone
they had another nice one and I bought it.
<Not for a tropical tank
I hope>
Following are a couple close-ups and one almost full shot.
The piece is about 7 inches tall. In all the research on pictures I saw
one that looks similar, Gracilaria textorii. With all the different
species of red macroalgae it's difficult for me to really know which one
it could be. The fronds are leathery feeling and one small blade is
solid white, as opposed to how Caulerpa seems to turn clear. My
concerns are amount of light, how to trim it down when needed, and water
movement. It came attached to a very tiny rock fragment.
<Can't
put my finger on the genus here, maybe a Galaxaura... but am pretty sure
this is a cold water organism... collected off of California... not an
uncommon practice... some folks who don't know... sell/buy Metridium,
Tealia et al. anemones, Catalina Gobies, macrophytes from here... Won't
live for long in warm water...
Picture 2: A couple weeks ago I asked
to purchase a small bit of Chaeto from the LFS and the staff person
pulled it from the sump under their soft coral display tank. Within a
couple days I had tons of copepods, but I also noticed this thin red
line on my glass and at first I thought it was a worm. But it is
growing and changing. I have 10 of these 'red things' located in one
area growing on the glass. Attached is a picture of two growths labeled
with the dates. The longest one on Day 1/14 is almost a half inch in
length. Do you have an idea what it might be?
Thank you.
Debra Piedra
<Mmm, maybe a hydroid... originating from/with the
coldwater Rhodophyte. I would keep your eye on the algae... remove it
when it appears to be decomposing. Bob Fenner> |  
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Another Rhodophyte? - 08/03/06
Hey, how's it going?
<<Fine,
thanks>>
Can you ID the subject of this picture for me?
Thanks.
Jim H.
<<Appears to me as a translucent species of
Rhodophyte. We've had a couple inquiries on these of late...must have
been an influx of live rock from someplace where these are
common. Regards, EricR>> |
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Saltwater ID 8/1/06
Hello, use your site for reference
all the time, thanks!
<Welcome>
I am wondering what this
is. I assumed it was algae, but have not been able to ID it anywhere.
Though I saw it on your site, but not sure. It is growing rapidly and I
would like to either trim it or move it.
Thanks
<Is a
beautiful photo and specimen of a Rhodophyte... likely a Fauchea
species:
http://search.msn.com/images/results.aspx?FORM=IRRE&q=fauchea
and on WWM:
http://wetwebmedia.com/redalgae.htm
Can be trimmed, cut,
pulled... Thank you for sharing. Bob Fenner> | 
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What is it? Red algae ID 2/25/04
WWM Crew, I have this probable
red algae growing in one of my tanks. Do you know what it is? First
picture was taken today. the other picture in Sept. 03. Mitch <Hi
Mitch. I am not sure of the ID of the first algae that sort of looks
like a bunch of curlicues. The second algae that is sort of feathery
looking, looks like Gracilaria. Both are beautiful and nice
finds! Best Regards. Adam> |  |  |
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