Gorgonian predator!

dreaminmel

New member
To all those that grabbed the yellow blade gorgs recently... you may want to give your gorgs a close look.

I kept finding branches on mine that appeared to have disintegration issues. Didn't see anything picking at the gorg so that was my best guess. Heh. So I turned on the tank lights early today due to company coming over that wanted to see it. Saw something odd on the gorg but didn't get to study it closer until they left. Then I saw it... this "thing" was slowly working it's way up a branch with a clear path of destruction behind it. After munching away it leaves just a spongey texture of gorg behind that just barely covers the internal branch. Immediately took the gorg out of the tank. First guess was some odd nudibranch. Well unless those have shells... not it. Took tweezers to this thing to pull it off the gorg and almost crunched it's shell. :eek1: Got it off and put the gorg back in the tank. Closer look now had me seeing little clear fuzzy nudibranch things still crawling around on it so back out with the gorg to capture one of those for pics too.

Below are pics I got. My camera does not like macro shots too well so I did the best I could. Off to do a water change and then I need to get back on the net to find out A) What the heck are these things? aka Am I dealing with one species in adult and larvae form or two different problems?, B) Will a gorg survive Tropic Marin Pro Coral Cure dip? and C) Would the dip even kill these things? God I love the challenge of this hobby... :hammer:

***Needless to say, those I was going to frag this gorg for will probably want to hold off until after I ID and eradicate these pests. ;)

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Flamingo Tongue?

Whatever the correct name, those gastropods won't survive without the Gorgonian as a food source.

Don't know what the nudi is.
 
Flamingo Tongue?

Whatever the correct name, those gastropods won't survive without the Gorgonian as a food source.

Don't know what the nudi is.


First thing I thought of Gary. Flamingo tongue cowrie. The nudi looks exactly like one I had in another tank. Weird.
 
G now has the cowrie-ish thing and two of the nudi's to play with. :) It does look very much like the Flamingo Tongue cowrie but I didn't get a close enough look at where the eyes were located to know if it may possibly be an Ovulid snail (false cowrie). According to the Sea Slug forum, the way to tell the difference is that if the black swellings for the eyes are raised from the skin then they are a snail. If the eyes are embedded in the skin they are an opisthobranch.

In the meantime I'm going to pull the yellow gorg one last time to hunt for any of the other Nudi's to set aside for G and then put it through a TMPCC dip. So far the gorgs at the ends of the tank don't show any on them. I'd like to keep it that way. ;)

Edit: Apparently the Flamingo Tongue cowrie is actually an Ovulid aka False cowrie. I'm sure you guys knew that but I was thrown off by the cowrie part. lol
http://www.thecephalopodpage.org/MarineInvertebrateZoology/Cyphomagibbosum.html
 
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Not having much luck ID'ing the smaller white slug. Read something on the sea slug forum about any nudibranch that'd eat Gorgonians would fall under the Phyllodesmium label but images searches by that name aren't coming up with anything that looks exactly the same.
 
Mel,
Thanks for the critters. I don't have any time for them right now but will try to ID for you. If you pick out more, bring them over. I will try to get a tank going to study a bit more. Do you know where the gorg came from? Location would be pretty helpful. I would also suggest checking with Dr. Ron Shimek.

Check this list.
http://www.nudipixel.net/species/#P
 
Thanks G. :) The gorg (Pterogorgia citrina) came from sealifeinc in Tavernier, FL. They state they hand collect Atlantic sea life and the description for this gorg says "a very hardy gorgonia found in the shallow waters of the Caribbean and Western Tropical Atlantic".

I'll see if I can check with Dr. Shimek and also will check out the linked list. :thumbsup:
 
Wow... who knew there were soooo many variations of nudibranch? Think I'm gonna need another coffee. lol :D

So far going by G's link I found Dendronotus sp. and Tritoniopsis sp. were the closest to the above white nudi but still no exact same pictures. Still looking but based on this it would seem that Dendronotus frondosus are found in the western Atlantic.
http://www.malacolog.org/search.php?nameid=8761
And this Wikipedia drawing is very, very similar to the nudi I'm trying to ID.
http://en.wikipedia.org/wiki/Dendronotus_frondosus

Edit:
Hmmmm.... :D
http://www.seaslugforum.net/tritfryd.htm
 
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just checked my gorg, Mel. Nothing. Guess you got the extra prize...geesh. Very cool looking little dude...but sure glad you spotted it! The rest of the gorg is okay?
 
So far, so good on the rest of the gorg. You looked for the little white fuzzy ones too right Kat? They are smaller than your pinky nail. Think that's why it took me so long to notice them.
 
yeah, i pulled the whole thing out and got my geology loop out. didn't even finish reading the whole post of yours...lmao. Just went, "holy schnitzle" and grabbed the loop and the gorg.
 
Just an update: No further signs of pests on any of my gorgs and G from ABC found that both Salifert's Flatworm Exit and TMPCC were able to kill the nudi's.
 

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