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07-05-2008, 05:53 PM
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#1 (permalink)
| | Plankton
Join Date: Jul 2008
Posts: 2
Karma: 1
 |  Eel? Crab? clam? what is this hitchhiker?!
Hi all,
I recently added a frag with a nice grouping of mushrooms on it, and today something caught my eye, living in the rock. It looks like the mouth of some creature, and the curious part is, it snaps shut when it senses movement, i.e., I walk by the tank.
here is a link to a quick video clip of it, since I figured this is the best way to describe what's happening: http://cobraftp.serveftp.com:81/pub/hitchhiker.wmv
What the heck is this thing??! | 
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07-05-2008, 05:56 PM
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#2 (permalink)
| | Bangghai Cardinal
Join Date: Jun 2008 Location: Shelton, Washington Age: 44
Posts: 1,376
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Wow, that is cool!!! Sorry, no good advise here. I am waaaayyyyy too new. But I will stay tuned. | |
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07-05-2008, 06:02 PM
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#3 (permalink)
| | Giant Squid
Join Date: Jan 2006 Location: Meriden, Connecticut Age: 44
Posts: 3,949
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My guess is it is some type of bivalve!!!! _________ 125gal.w/Mag9.5 return(dual megaflow)>Mag7 pump Aqua Cev180skimmer.Wave2k Hamilton Reefstar(2)250watthqi(mh)pend.a Yellow, Naso Tang Red Lip Blenny Percula Clown Demoiselles Niger Trigger F. Wrasses Ceriantharia Orn.Shrimp and Stars Hermits Queen Conch asst. snails> Stars Zoos shrooms Montipora Brains Gorgonians Favia Turbinaria(large+small polyp) Acropora Xenia Tridacna (CroceaMaximaSquamosa) Leathers <35+75gal.reef tank as well> 
"IF THE PHONE DOESN'T RING...IT'S ME"  jb  | |
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07-05-2008, 08:22 PM
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#4 (permalink)
| | Astrea Snail
Join Date: Jan 2008 Location: Conroe, Texas
Posts: 71
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I think it's a bivalve too, and judging by the fact that it appears to move both valves as it closes, I think it's probably an Ark Clam, family Arcidae. Other than tucking back against the rock and opening and closing, is it stationary?
Cheers,
Don | |
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07-05-2008, 08:30 PM
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#5 (permalink)
| | Plankton
Join Date: Jul 2008
Posts: 2
Karma: 1
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Hi guys, thanks for the replies! Don -- yes, it (so far) is stationary, other than the opening/closing. I was especially taken aback by the fact that it can "see" so well. I can be several feet from the tank and make a relatively small movement, and the little guy will quickly snap shut. the shell halves (assuming at this point that it is in fact some type of bivalve), come to a point, which looks almost like it has a pair of interlocking teeth on the tips. this is what made me think it was something more lively than a bivalve initially. the whole "jaw" is about 1 cm across; not a terribly big creature.
I did notice when I fed the fish this evening, that the creature stayed closed. I was watching quickly to see how it would react when the scent of food came into the water. | |
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07-05-2008, 08:33 PM
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#6 (permalink)
| | 3reef Moderator |
I would vote Bivalve as well.
J | |
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07-05-2008, 08:53 PM
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#7 (permalink)
| | Teardrop Maxima Clam
Join Date: Jan 2007 Location: Beverly Hills, MI Age: 17
Posts: 825
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wow thats wild! | |
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07-06-2008, 06:01 AM
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#8 (permalink)
| | Astrea Snail
Join Date: Jan 2008 Location: Kalamazoo, Mi
Posts: 52
Karma: 151
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 Pretty cool hope you find out what it is.
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72Gal. Bowfront, Lifereef overflow, MegaFlow 3 sump, ASM G3 Skimmer, Eheim 1260 return pump, PhosBan Reactor, Turbo-Twist UV.Current USA Outer Orbit HQI 2-150 watt Metal Halide Light Fixture with T5 HO Actinics. Future tank hopefuly a 180 | |
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07-06-2008, 06:04 AM
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#9 (permalink)
| | Sea Dragon
Join Date: Mar 2008 Location: Coral Springs Florida Age: 16
Posts: 529
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thats so cool _________  | |
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