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Old 06-04-2007, 07:17 PM   #16
tdwyatt
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Better pix of the Alpheus spp. and some variants at the link below. They are usually commensurals in corals (especially stony corals) and do not eat the coral tissue... I don't think this specimen is chreading your Nephthid.

You may want to check out the Smithsonian Alpheid site to see if you see the shrimp you're observing, but I suspect that the chelipeds will be a bit different if the shrimp is actually eating your Nephthea. The taxonomy of the Alpheidae is difficult, to say the least... Many genera, e.g., Alpheopsis and Leptalpheus, need redefinitions and no less than seven genera are currently being described by taxonomists as we speak. Despite this extensive taxonomic effort by biologists and field research, all larger genera are yet to approach revisions at species level, and may not see resolution for many more years. Cryptic species pairs and complexes occur in several genera, notably in the two most specious genera Alpheus (with well over 280 species) and Synalpheus (with at least 125 species). Currently, most of these taxonomic issues remain unresolved, particularly in the western Indopacific region, where environmental selection has lead to numerous intraspecific variations, including cheliped polymorphism and many many color variants. Finding out exactly WHICH shrimp you are seeing is unlikely, and the hugh diversity in these genera make it equally unlikely that this is a known specie, especially if it is actually eating the coral tissue. This is not to say that you won't get close, just that it may not be exact.

See : http://biogeodb.stri.si.edu/bioinfor...meAlpheus.html


HTH
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Old 06-04-2007, 09:17 PM   #17
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Quote:
Originally Posted by tdwyatt View Post
Better pix of the Alpheus spp. and some variants at the link below. They are usually commensurals in corals (especially stony corals) and do not eat the coral tissue... I don't think this specimen is chreading your Nephthid.

You may want to check out the Smithsonian Alpheid site to see if you see the shrimp you're observing, but I suspect that the chelipeds will be a bit different if the shrimp is actually eating your Nephthea. The taxonomy of the Alpheidae is difficult, to say the least... Many genera, e.g., Alpheopsis and Leptalpheus, need redefinitions and no less than seven genera are currently being described by taxonomists as we speak. Despite this extensive taxonomic effort by biologists and field research, all larger genera are yet to approach revisions at species level, and may not see resolution for many more years. Cryptic species pairs and complexes occur in several genera, notably in the two most specious genera Alpheus (with well over 280 species) and Synalpheus (with at least 125 species). Currently, most of these taxonomic issues remain unresolved, particularly in the western Indopacific region, where environmental selection has lead to numerous intraspecific variations, including cheliped polymorphism and many many color variants. Finding out exactly WHICH shrimp you are seeing is unlikely, and the hugh diversity in these genera make it equally unlikely that this is a known specie, especially if it is actually eating the coral tissue. This is not to say that you won't get close, just that it may not be exact.

See : http://biogeodb.stri.si.edu/bioinfor...meAlpheus.html


HTH
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Old 06-05-2007, 01:09 AM   #18
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Quote:
Originally Posted by tdwyatt View Post
Better pix of the Alpheus spp. and some variants at the link below. They are usually commensurals in corals (especially stony corals) and do not eat the coral tissue... I don't think this specimen is chreading your Nephthid.

You may want to check out the Smithsonian Alpheid site to see if you see the shrimp you're observing, but I suspect that the chelipeds will be a bit different if the shrimp is actually eating your Nephthea. The taxonomy of the Alpheidae is difficult, to say the least... Many genera, e.g., Alpheopsis and Leptalpheus, need redefinitions and no less than seven genera are currently being described by taxonomists as we speak. Despite this extensive taxonomic effort by biologists and field research, all larger genera are yet to approach revisions at species level, and may not see resolution for many more years. Cryptic species pairs and complexes occur in several genera, notably in the two most specious genera Alpheus (with well over 280 species) and Synalpheus (with at least 125 species). Currently, most of these taxonomic issues remain unresolved, particularly in the western Indopacific region, where environmental selection has lead to numerous intraspecific variations, including cheliped polymorphism and many many color variants. Finding out exactly WHICH shrimp you are seeing is unlikely, and the hugh diversity in these genera make it equally unlikely that this is a known specie, especially if it is actually eating the coral tissue. This is not to say that you won't get close, just that it may not be exact.

See : http://biogeodb.stri.si.edu/bioinfor...meAlpheus.html


HTH

thanks i did find the shrimp thats on my dendro...technically hes not eating the flesh...hes eating the fluffy arms of the polyps..they turn into usless unable to feed pink stubs over night..& there is very few polyps left able to feed since i spotted this shrimp almost 2 weeks ago. i have observed him just ripping and digging inside each polyp individually from top to bottom of the coral.but not touching the stem..just walking on it.
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Old 06-06-2007, 11:21 AM   #19
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When you catch it please post a pic. It would be extremely useful for others to know what it looks like in case they have the same problem.
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Old 06-09-2007, 12:32 AM   #20
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hahahha i got pics of him !! he went nuts when i hit him with a ice cold cap full of marine snow !! LOL

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Old 06-09-2007, 12:34 AM   #21
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That is amazing how he blends in!!!
Did you KILL him?
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Old 06-09-2007, 12:38 AM   #22
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no...i cant get a pic of his crab-like claws tho...when the light hit him for 5 seconds he went back in the coral...for some reason he stayed out just long enough to get a decent picture...not a very good one..but ID can be made now
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Old 06-09-2007, 12:39 AM   #23
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That sucks that you can't just grab his little ass and rip him off
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Old 06-09-2007, 12:41 AM   #24
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do you realize how tiny he is !!!!! hes smaller than the lead of a pen ! you see those arms on the dendro, he hides down inside those..when i hit him with the ice cold snow he ran around that coral like he was in a race !
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Old 06-09-2007, 12:42 AM   #25
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Oh my gosh! That must be so frustrating!!!
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Old 06-09-2007, 12:44 AM   #26
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im gonna leave the dendro in the feeding container all night...maybe it'll get fed half-way good....its dieing anyway..see its polyps..shame...
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Old 06-09-2007, 12:46 AM   #27
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Sorry
You can't help that situation
just nature
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Old 06-09-2007, 08:14 AM   #28
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Cool pic!!
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Old 06-10-2007, 05:44 PM   #29
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Still no ID - just not enough detail - but it is an interesting little beast. How do you feel about sending it to me at the museum so I can get a pro to id it? You can even kill it first so you still get your revenge.
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Old 06-11-2007, 01:05 PM   #30
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To save the coral cut off where it is living. I like the interceptor idea as well he'll be toast.
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