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Old 02-19-2010, 08:31 PM   #1
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cucumber??

Got this hitchhiker I believe from my Macro. I noticed it last weekend and it was about half this size. It pulls sand into it's "mouth" with it's tentacles and the sand seems to pass completely through it and out the other side, isn't this what cucumbers do? After seeing it double in size so quick, and looking an awful lot like an aptasia although not acting like one, I figured best to pull it out...not like it's colorful or anything but what the heck is it??

Fully extended it's maybe an inch long, that is very fine sand with it from the refugium and it's coloration is very much a light brown/see through color...you can actually see the sand inside it.

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Old 02-19-2010, 08:52 PM   #2
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Looks more like a feather duster IMO.
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Old 02-20-2010, 12:01 AM   #3
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Is it pooping sand pellets? If it is then it's a cuke. I have two in my tank. Exact species is important. If they get scared, picked on etc, they may evicerate their stomach (literlay puke its guts out) which may nuke a tank with toxins. I have two sand cukes that did that shortly after I got them. I did a 50% water change and didn't lose anything, so I think the ones I have are not that toxic. They are both still in the tank I do see them occasionally with a very clean sand trail behnd them.
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Old 02-21-2010, 11:38 AM   #4
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Yup, it poops out sand pellets. It was in my refugium so no fish or anything to pick on it but I decided to remove it to be safe. Interesting little creature.
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Old 02-21-2010, 11:58 AM   #5
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A1, just for reference, feather dusters don't do jack squat lol. They chill on the sandbed or on rocks and just basically, "dust" the water for any particles they could catch with their "feathers". The only movement of a feather duster you'll see is when agitated they suck their crown back in to the tube, but that's about it for dusters. As soon as i heard this creep was pulling in sand through it's mouth, i was like that's definitely not a feather duster lol. No feather dusters i know of do that haha. Anyways, smnw10, i'd say that's a pretty lucky find.
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Old 02-21-2010, 12:11 PM   #6
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My cukes go through periods where they seem to be twice their normal size. They're just stretching. The nex day they'll be back to their shorter size again.
Now that I think about, I haven't seen either of mine in quite some time.
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Old 02-21-2010, 03:03 PM   #7
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Oops lol. Well it does look a little like a feather duster lol
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Old 02-21-2010, 03:46 PM   #8
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Oops lol. Well it does look a little like a feather duster lol
Looks like one to me also.
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Old 02-21-2010, 04:14 PM   #9
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Oops lol. Well it does look a little like a feather duster lol
If you watch a featherduster closely, with a magnifying glass,(Sherlock) you will see them catching food particules from the water column and passing that food from feather to feather (for lack of a better word) down and in to its tube as it feeds. Very amazing animal.
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Old 02-21-2010, 05:13 PM   #10
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At first I too thought it was a feather duster from the tube. But the mouth end looks like a cuke more than a duster, and if it's leaving sand pellets behind it's a cuke. Dusters don't do that.
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