somoney Posted January 26, 2006 Share Posted January 26, 2006 Enhanced photo with Picasa. [ENJOY] Hard to focus on something this small but the top Jellyfish type life form is a reflection which shows more clearly the actual shape (Triangle). After shutting my filters down for cleaning I noticed this tiny Hydroid / Jelly in my 6.6G Bookshelf nano. It expands and collapses like a Jelly fish for propulsion at a moderate speed. Anyone have a name dor this little fella? I'm curious regarding resources to "NAME" the exact type of life this is. Link to comment
Diatome Posted January 26, 2006 Share Posted January 26, 2006 Hard to tell but maybe you have a hydrozoan jellyfish, Obelia is what you would search on, that actually has stages of life that go from Hodroid to Medusa (free swiming) as opposed to what we typically see on the boards that stays attached and rarely separates. Link to comment
somoney Posted January 26, 2006 Author Share Posted January 26, 2006 Hard to tell but maybe you have a hydrozoan jellyfish, Obelia is what you would search on, that actually has stages of life that go from Hodroid to Medusa (free swiming) as opposed to what we typically see on the boards that stays attached and rarely separates. Its Bell / Triangle shape lead me to believe that its in the Hydroidomedusae class, However, he absence of ant visable tentacles is whats making this difficault for me to classify. Since it nature is to ride the top water currents it will most likely get sucked up into my surface skimmer and we'll never see what they grow up to be. If they survive and exhibit any more characteristics Ill be sure to post them here. The weirdest things pop out of live rock! Link to comment
c est ma Posted January 27, 2006 Share Posted January 27, 2006 Cool! Are you sure it doesn't have tentacles? We had some tiny, swimming "jellyfish" in the beginning. They just happened to be the first item we attempted to take pictures of through a tiny 12X loupe we have. So the following pics show how clumsy (& blurry) our first attempts were (hint to those taking pics through loupes--I've since found it helps a lot to decrease the exposure setting...). Our first try: Getting a little closer, you can start to see tentacles: These things would sometimes come to rest on the glass or rock; other times they'd pulse around the tank like little spaceships. So cool! We did not get a name but concluded they were the medusa stage of a hydroid. They seemed to be associated with a type of hydroid that was very tiny and had 4-tentacled, bulb-tipped polyps connected to each other by long threads of tissue. Do you have anything like that in your tank? I used to have a page of Ron Shimek's with some discussion of hydroids in their various forms, but his stuff has been inaccessible for a while...sigh. --Diane Link to comment
Ann Posted January 28, 2006 Share Posted January 28, 2006 I have these hydroid jellies too, the tentacles are really, really hard to see unless you get up close. Help is required in the form of a close-up photograph in order to make them out. Best regards Ann Link to comment
yOyOYoo Posted January 28, 2006 Share Posted January 28, 2006 I too had these in the beginning stages of the tank, I don't see them anymore, i guess maybe my sixline ate them? Link to comment
reefpeace Posted January 28, 2006 Share Posted January 28, 2006 I have these hydroid jellies too, the tentacles are really, really hard to see unless you get up close. Help is required in the form of a close-up photograph in order to make them out. Amazing photo, Ann! Link to comment
somoney Posted January 28, 2006 Author Share Posted January 28, 2006 I have these hydroid jellies too, the tentacles are really, really hard to see unless you get up close. Help is required in the form of a close-up photograph in order to make them out. img /img Best regards Ann YIKES!! Thats just down right scary! Yours seams to stick to the glass with its tentacles, whare mine does not have any. I tossed a 70-300mm APO Macro lense on my cannon and I just dont see any. Link to comment
Maeda Posted January 29, 2006 Share Posted January 29, 2006 Ann. I've noticed that your pictures are amazing, and this one just floored me. How do you do it. Do tell. Link to comment
Samoyed Posted January 29, 2006 Share Posted January 29, 2006 Ann...your camera is so nice...mine would look like you are looking into a microscope...with like a smashed bean in the slide...compared to that thing...LOL Link to comment
awpong Posted November 3, 2010 Share Posted November 3, 2010 I had a few of these as well. I sucked up 3 in a little pipette and brought them to my Marine Biology professor. He examined them under a dissection microscope, and said that they were some form of benthic jellyfish with 9-fold symmetry (at least from the angle we could see). Interestingly enough, each tentacle had photoreceptor cells on them. Link to comment
Rymah Posted November 3, 2010 Share Posted November 3, 2010 I had a few of these as well. I sucked up 3 in a little pipette and brought them to my Marine Biology professor. He examined them under a dissection microscope, and said that they were some form of benthic jellyfish with 9-fold symmetry (at least from the angle we could see). Interestingly enough, each tentacle had photoreceptor cells on them. Pro Necro!!! Link to comment
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