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unidentified shrimp - similar to a Tiger Shrimp


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#1 christianloader

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Posted 18 February 2012 - 02:52 AM

Last year i saw these 2 shrimps at the dive site Bolong in Wori Bay, North Sulawesi. They were very small, about 1cm, and found at 5m on flat, open, white sand.
I think it's very similar to a Tiger Shrimp (Phyllognathia ceratophthalmus), especially the eyes and the main claws.
Does anyone have any better idea about what they are? I'd like to get in touch with a shrimp expert, if anyone can give me a name?

Thanks!
Christian

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  • unidentified_shrimp___Wori_Bay__Sulawesi_copy.jpg
  • unidentified_shrimp___Wori_Bay__Sulawesi_2_copy.jpg
  • unidentified_shrimp___Wori_Bay__Sulawesi_3_copy.jpg



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#2 cor

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Posted 18 February 2012 - 04:39 AM

We found some of these guys during a wetpixel trip in indonesia a year or 2 ago. We thought they were in the same family as harlequin shrimp. We couldnt find it either, and emailed I think Leslie, who told us that it was a known shrimp. I cant remember the details, maybe Eric or Leslie remember.

Here is one of my shots from back then.

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#3 Leslie

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Posted 18 February 2012 - 09:21 AM

It is a relative, Phyllognathia simplex. Cor & others have posted about it before. Eric even took video of one munching on a brittle star. Although reports of it are rare the animal is probably common. It's just so small & well camouflaged against the sand that very few people notice it. It was described from Sagami Bay, Japan & extends at least to Australia, PNG, & Indonesia. The second link will take you to the original scientific description & the third to a later paper that includes the color pattern.

http://wetpixel.com/...rt=#entry240481
http://decapoda.nhm....25499/25499.pdf
http://decapoda.nhm....14176/14176.pdf

#4 echeng

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Posted 18 February 2012 - 09:40 AM

Nice shots! Here is one eating a brittle star arm...

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#5 cor

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Posted 18 February 2012 - 11:23 AM

Mine also has a piece of brittle star in its arms :D Freshly cut off.
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#6 Alex_Mustard

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Posted 18 February 2012 - 12:03 PM

He's a really cool little fellow!

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#7 Leslie

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Posted 20 February 2012 - 09:17 AM

Yup. Like the harlequins these are specialized echinoderm predators that - as far as we know - only go after brittle stars.

#8 Conny3479

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Posted 23 February 2012 - 01:16 AM

Last year i saw these 2 shrimps at the dive site Bolong in Wori Bay, North Sulawesi. They were very small, about 1cm, and found at 5m on flat, open, white sand.
I think it's very similar to a Tiger Shrimp (Phyllognathia ceratophthalmus), especially the eyes and the main claws.
Does anyone have any better idea about what they are? I'd like to get in touch with a shrimp expert, if anyone can give me a name?

Thanks!
Christian



Did you see them by daytime or on a nightdive?

#9 christianloader

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Posted 25 February 2012 - 09:54 PM

Did you see them by daytime or on a nightdive?



Hi,
It was in the daytime, on an afternoon dive.


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#10 christianloader

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Posted 25 February 2012 - 09:58 PM

Nice shots! Here is one eating a brittle star arm...



great shot Eric, i hope i can find another one of these soon here in north sulawesi.


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#11 christianloader

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Posted 25 February 2012 - 10:02 PM

It is a relative, Phyllognathia simplex. Cor & others have posted about it before. Eric even took video of one munching on a brittle star. Although reports of it are rare the animal is probably common. It's just so small & well camouflaged against the sand that very few people notice it. It was described from Sagami Bay, Japan & extends at least to Australia, PNG, & Indonesia. The second link will take you to the original scientific description & the third to a later paper that includes the color pattern.

http://wetpixel.com/...rt=#entry240481
http://decapoda.nhm....25499/25499.pdf
http://decapoda.nhm....14176/14176.pdf



Hi Leslie,

Many thanks for your help, after months and months now i know what it is! :-) It's nice to have identified an unusual shrimp similar to the Harlequins & Tigers,

All the best,
Christian


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#12 expatdiver

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Posted 25 February 2012 - 10:08 PM

This thread answers the a question about a small shrimp I found in Lembeh a few weeks ago. Unfortunately, none of my shots came out clean enough to warrant an id thread, but I know what I saw, and I'm pretty sure this little guy is it.
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