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FAQs on Anemonia/Majano Anemones 2

Related FAQs: Anemonia 1, Anemonia 3, Anemonia 4, Anemonia 5, & Aiptasia Identification, Anemone Identification, Other Pest Anemones Eradication by: Peppermint Shrimp, Butterflyfishes, Filefishes, Chemical/Physical Injection, Hypo/Hyper-Salinity,  

Related Articles: Aiptasia/Glass Anemones, Anemones, Cnidarians

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Anemone Success
Doing what it takes to keep Anemones healthy long-term

by Robert (Bob) Fenner

could you ID these creatures?   7/19/13
Hi WWM Crew,
I have attached two pictures for you.  Curious what these are... and if they are invasive.
<Mmm, can be... the first is a Clavulariid, the second Anemonia. See WWM re. Bob Fenner>
 They have started to grow throughout my tank... not many but they have come up quickly.  If these are invasive, I would like to know sooner than later so I can take care of them.  Does not look like Aiptasia.  Could it be Majano... thoughts?

Majano Anemone ID -- 10/11/07 Hi again guys, <Hi Mike, Brenda here tonight> I just wanted to thank you for all your help in establishing my first reef set-up. I made a contribution on Amazon Honors; it's the least I could do after all your help and money you've saved me at the local store (and what I could have saved if I knew about the site sooner). <Thank you for the contribution, and for your kind words!> I recently purchased fully cured live rock with great stuff (e.g. many Stomatella varia, red mushroom anemones). Could you help me ID this particular critter? It is merely the size of a quarter, reddish stem and mouth area, and tentacles are red and tipped with bright green. I apologize in advance, but the attached photos were the best I could do. <It is a Majano Anemone, a pest anemone. See here: http://www.melevsreef.com/pics/bta/not/majano.html and here http://www.wetwebmedia.com/ca/cav1i3/aiptasia_impressions/aiptaisia_impressions.htm > Thanks,
<You're welcome! Brenda>

Anemone ID -- 09/08/07 Hi WWM Crew, <Chris> I have an anemone that I cannot positively identify. It is an interesting one that s really beautiful, but I am not sure what it is. <Mmm... think I know> Can you please see if you have any luck with this one. I have included a picture. The white one is a Sebae (I know that one...lol), but the one in front looks like a morphed Bubble. <Yes...> Please let me know your thoughts. Thanks Chris <Is likely an Anemonia species... perhaps A. sulcata... maybe cf. majano... on a few clues... the color and shape of the pedicle (base), and shape and number of tentacles, and lastly position near the Heteractis... BobF>

Unidentified problem anemones?   7/30/07 Some guy gave me something he said was an anemone to give to my out of town brother when he came in for a visit. When he came into town and saw them he said "I don't want that #@*%" So I removed it from my aquarium as well, or so I thought. These little critter are round with tentacles and somewhat reddish and somewhat fluorescent green and they procreate like a rabbit! <Heee, Lagomorphs don't do scission... at least as far as I'm aware> I now have an aquarium overran with these anemone looking like creatures that are killing off my desirable corals and clogging up my plumbing and pumps. I have a 90 g tank with a 20 - 25 g sump. I have a picture of these creatures (although not that clear) I am attaching. I'm sure others have had a problem with these if ever introduced into their tanks they just take over everywhere. How do I rid myself of these pests? what will eat them? Should I still consider this "guy" a friend? Should I introduce this "guy" to flesh eating bacteria? Please help me! These things are creating havoc in my tank. Thanks in advance - Spence <These are very likely Anemonia... cf. majano... Please see WWM re. Bob Fenner>

Mystery Majano -- 6/1/07 Alex (golly....twice in one week!), <Hee! Hello!> We wrote a few weeks ago about some mystery anemone in our tank. However, the photos we attached weren't clear enough to get a real idea of what they look like. We hope the attached photos (close-up shot is vertical; horizontal shot shows them in the lower right corner) are better. <Yes, these are Majano Anemones. Search WWM and the web on that and see. They are considered pests by some, but are not a problem for others.> They arrived about the size of peas on a rock with a coco worm (still there). There were three. A few weeks ago, one of them went on walkabout to another part of the tank. <Not far I hope.> Yesterday he split into two. <Yikes!> We have had them since December. They are now the size of golf balls. <Hmm, I don't think they get any bigger than this. It sounds like you have a very nice habitat for Majanos!> Are they bad? Very bad? Perfectly good? <Badness is in the eye of the beholder.> Our LFS does not know what they are. <Mine either.> We don't really want anemones (too many coral). <Good point!> So, my question is this: Which tank should house them ... fish or septic? <Since yours are already multiplying and going on walkabouts, you may want to remove them. I had one come on a new rock recently, and decided to add him and wait and see. He is not growing quickly, and I think he is cute. But there are plenty of people who have had them become pests.> Also, for your enjoyment, we have attached a photo of our much- beloved "mushroom rock." <Very beautiful!> Thanks as always!
Michael and Dianne
<Cheers, Alex>

Pomacanthus employment in ridding pest anemones  2/28/07 Thanks for the help as always, <Of course.> I have been researching Pomacanthus imperator as a possible candidate for Anemonia majano control. <Mmm...not my first choice.> I read that other of the Pomacanthus species such as Pomacanthus E. navarchus and Pomacanthus E. xanthometopon also may feed on these pests.   <They can and do at times but when there are filamentous algaes, microfauna, other sessile invertebrates....prepared foods in the tank the animal is more likely to opt for those. Like asking me or you to choose between a medium-well rib-eye or room temperature okra. It's not near the top of the list, when it comes to their diet make-up.> What am wondering is:  Is this information correct <To some degree but see above.> (is it probable that these angels will eat this anemone)? <Possible yes, likely....> If so, which ones are most likely to do so or have you heard do so? <Of Pomacanthus angels, Pomacanthus imperator is probably the most likely, at least this is what I was told on a chat forum a year or so ago by Steven Pro. I personally have never employed them in this manor.. Pomacanthus Angels themselves are not an animal to be taken lightly, bought at a whim. Require large and well planned systems. Often suffer from shipping, handling, poor environment, etc. .> Any other suggestions will be great, thanks :) <Read this: http://www.wetwebmedia.com/ca/cav1i3/aiptasia_impressions/aiptaisia_impressions.htm .> Adam <Adam J.>

Majano anemones. . . care?   12/6/06 Well, I've seen a lot of pages on how to nuke them, but none on how to Care for them. . . <Heeeee! Perhaps just to do "the opposite" of what is suggested for their elimination?> I was given a small majano by a local store.  It has its own little 2 gallon tank with some macro and some live rock. <Actually quite beautiful animals IMO as well>   Right now I've got too much flow (I think.   The filter is rated at up to 100 gph, yet is turned down as far as it will go) on there.  So far in the week I've had her really can't see a green and PINK anemone being a guy :) ), <Watch this... or you may be/stay a "lonely guy" w/ matching ferns> she's been hanging out on the wall of the tank on the opposite side of the filter, soaking up the flow. I guess for one, should I reduce the flow?  If so how? <I'd leave this as is. Is not too much... but get a larger system, soon.>   The filter is the smallest sort I can find, and the only other option would likely be a tiny powerhead (would take digging to find) or an airstone of some variety.  Also, do I need a heater? <Yep> She hasn't shown any sort of negative effect from being in cool water yet, though doesn't it supposedly take a while for them to show stress from improper conditions? <Not long at times...> How much light would I need? <Enough... see WWM re Anemone Lighting: http://www.wetwebmedia.com/marine/inverts/cnidaria/anthozoa/anemonelightngfaqs.htm "and the linked files above"...> Also, what to feed? <See... not much> Not exactly a nutritious diet, but it seems like the biggest thing that tiny mouth will take is a large Cyclops "micro crab" which is extremely tiny.  What else would be a good choice that is small enough that I wouldn't have most of it rotting in the tank.  Also, should I play with things  a bit to try to get a bit of a higher content of dissolved stuff an extra pellet to rot on the bottom for instance), or how often should I feed her?  Last question: is there any sort of cleaners I can have in such a small tank? <Best to cut up something marine, meaty into very fine bits, put this in suspension, turn off the filter, and squirt this with a turkey baster into/towards the anemone... once, twice a week... Are variably photosynthetic... Bob Fenner>

Majano/Aiptasia Removal 11/8/06 Good evening (at least it is here in TX.); <Evening> My question revolves around 2 pest anemones. I am currently in the process of cycling my new 110 gal., corner overflow, that is using an old wet/dry trickle filter as a sump/live rock design of my own (no bio balls or ceramic, I just want to use live rock, DSB). My question is, I have recently spotted a Majano anemone, and a few Aiptasia anemones in one of my other tanks (thanks to WWM for helping me ID these bad boys!). I want to remove the live rocks that these "pests" are on and put them in my sump for the 110 gal. to help cycle it and act as a filter. My question is two-fold 1. Will these "pests" invade my main tank if they are in the sump? <Very possible.> and 2. Will live rock in a sump require a lot of lighting to be an efficient biological filter?  <No light needed for biological filtration, but a little might be nice for some algae.> Thanks in advance, Erick.. <Chris>
Erick Swanson

Majano Anemones  10/29/06 <Hi Scott, PufferPunk here> I posted a similar message on a local forum and your site was recommended for help.  I bought a few rocks from another reefer that had quite a few "green Aiptasia/zoos".  I thought they were interesting and not a pest until they started spreading to other rocks.  I have since moved the rock into another tank that doesn't mind them but I want to get rid of them from my tank.  I was going to try Joe's Juice first and then some peppermint shrimp.  From reading other posts, I am guessing this is a form of Aiptasia but I wasn't sure because I haven't seen a pic of anything like it.  What do you think? http://i126.photobucket.com/albums/p83/Mullins1420/100_0889.jpg <Those are Majano anemones.  These pretty little anemones come with a bad attitude. They can quickly reproduce and will sting anything they come into contact with. Therefore, most reefers choose to eradicate them. Too bad... they really are pretty.  Best way to rid your tank of them is to remove the rock they ore on.  They will take over your tank & wipe out most of your corals.  ~PP> Thanks for the help, Scott

Not Bubble-Tip... Majano Anemones! 10/15/06 Hi there EricR. <<Hello Tree>> Thanks for your response. <<Quite welcome>> I gathered some of my anemones and took them to the pet shop, they told me they were "Majano" anemones. <<Yikes!  An unwanted pest for sure...>> I looked them up, mine look just like them, and found one site were the guy said they were the "Tribbles" of anemones. <<Indeed they can be...and killing all in their path>> Seeing how fast they multiply I have to agree.  I had three on the tank glass and within a week ended up with eleven. <<Can be very difficult to eradicate>> All of the glass inhabitants have been moved. I set up another tank system just for them. <<Interesting prospect>> If they survive, which I'm sure they will, within a few months maybe I'll add some sexy anemone shrimp. <<Have never heard of these shrimp taking up with Majano anemones...do let us know how this fares>> In the meantime, any that stray on the glass are being transferred and the largest concentration of them on one of my rock pieces will be transferred into the tank also.  I know it will be ongoing to eliminate them from my main tank but I'm willing to try. <<Is all you can do>> Even though they eliminated some of my mushrooms I can't really eliminate them. <<First I've heard of someone setting up a species tank for Majano anemones..."Kudos" to you for this...interesting creatures in their own right>> Thanks, Tree <<Regards, EricR>>

Majano Anemone Question  11/9/05 Dear WWM Crew, <Ivy> I have a 3.5g Nano tank, and recently acquired at a frag swap, a beautiful Green Pink Anemone. Now I know I have come to the conclusion that is the pest anemone the Majano, but I could not bring myself to actively kill it since it is quite large (2 inches across) and quite beautiful. (I also feel guilty) <No need> I have been advised to kill it immediately as it could spread, <Ridiculous> however I have kept it for 3 months now, and it has not produced any clones. I figure if it will not spread, and is easy to keep alive, it might be a good host for my inverts. <Mmm> My questions are.. a.) Will Anemone Shrimp, and/or Sexy shrimp be able to host in a Majano? <Possibly, though not likely> b.) Will the Majano grow much larger? <No> c.) How bad is the sting of the Majano on corals such as Zoos, Frogspawn, Hammers, mushrooms, GSP. <Not a big winner over these (quite the opposite generally), though best to keep separated...> d.) What is your opinion on keeping it in my nano? <A beautiful animal that will make a worthy addition> I have attached a picture of the Anemone. Thanks, Ivy <Cheers, Bob Fenner... "a weed is a plant that a use has yet to be found for">   

Re: Aiptasia or something else? Thank you for the quick response. If I understand you correctly, you believe that this is an Anemonia species, not Aiptasia, which although it can spread like Aiptasia if there are poor tank conditions, can otherwise be contained and enjoyed.  <Mmm, could still be a Glass Anemone species...> I looked at several different sources and while there are certain pictures of Anemonia cf. Majano that look similar, most of the pictures seem vastly different to me. The majority of the pictures of Anemonia cf. Majano appear to have more tentacles than the animals in my system. (I am basing that comment on the number of observed tentacles more than the tentacle position as depending on if the animals are open or "shut" the tentacles can appear different.) Furthermore, it appears that some of the pictures have a bulbish shape to the tentacles, while others are more rounded. Is this just a bit of diversity in the species or the hallmark of different species of Anemonia? <Both> Another question that developed as a result of my research is the fact that most of the accounts regarding the Anemonia species states that they tend to move towards the light. I have only had 2 of these animals move and in both instances it was away from the light. One going to the underside of a piece of rock for a few weeks before moving to the side of the same piece. Another just moving lower on the rock, away from the light. This seems to be contrary to everything I read, especially since I am running currently running a low light system (6500K NO T8 50/50 bulb while I am waiting on getting my ballast fixed) <Depends on the quality, intensity of light...> Finally, all of the literature seems to state that the Anemonia sp. all have a powerful sting. As I said in the initial question, I have witnessed multiple contacts between these animals and the other inhabitants of my tank. That fact does not make sense to me in light of what the literature states. Thanks again.
<Your mileage may vary. Bob Fenner>

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