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Flatworm Study - trying to identify (a lot of pictures) (1 Viewer)

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jdeveaux

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I originally found one of these in 2007 and have since discovered not just one but two more....Now I really want to learn more about these things.

Up until now I haven't given them much thought beyond common curiosity but now I've caught them in action.

A couple of weeks I found one with two of my large Super Tongan Nassarius snails wrapped up in its body - pictures didn't turn out well since it was after lights out and I forgot to put the memory card in the camera :oops:

Some observations:
  • Ultra thin - thinner than paper
  • Sticks to the surface areas - I've never seen it swimming
  • Very fast and elusive
  • I've only every found them at night.
  • They break apart easily making them harder to catch for fear of them breaking apart in multiplying.
  • I've tried siphoning them but they move too fast.
  • Looks like I'm going to be doing some LR dips.
  • Now I know they can get up to at least 4.5 inches.

Now the pictures...

The first encounter - and a great shot to show just how hard they are to find
flatworm_10-2007_04.jpg

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That one was about 2.5 inches when it stretched out...Here are a few more pictures of it. This is from the October 2007 capture
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The newest find and largest so far. Caught him saving my snails
flatworm_5-2010_05.jpg

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flatworm_5-2010_06.jpg


You can see how delicate they are. Lured this one out onto the sand bed and snagged it with tongs and a siphon for the bits.

Let me know if you have any thoughts or a possible ID. If there are any of you invert nuts that would like me to capture and keep one of these alive let me know and I'll do my best.
 
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jdeveaux

jdeveaux

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Way to big for that. Actually I put the question out on Reef Central and I believe we have narrowed it down to the polyclad family of flatworms. Definitely predatory on snail, clams, ect...
 
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