'Opae Kala'ole - Shrimp & other Invertebrates - Aquatic Plant Central

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Old 02-20-2007, 06:27 PM   #1 (permalink)
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Default 'Opae Kala'ole

Here are some photos of the native freshwater Opae found here in Hawaii. This is the "mountain opae" aka Atyoida bisulcata aka 'Opae Kala'ole aka 'Opae Kuahiwi. Like other atyids? They have a fan basket to filter debris out of the water but also forage for food in the gravel.

They don't seem to like water over 74 degrees, for they die and turn pink, like they got cooked.........ironic because I have heard thay they used to be a native food source when they were abundant.

There are a few photos from differnt angle and one shot has a WT Neocaridina denticulata sinensis to compare size and color. These are relatively small cause I have seen some aproaching 2".

Enjoy,

I think I promisesd these photos to either Jan or Pisces girl well over a year ago......sorry for taking sooooo long

Ken T.








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Old 02-20-2007, 06:39 PM   #2 (permalink)
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They are a beautiful shrimp. I wish we could get reall get a good production line going in Hawaii, but they're so hard to breed (think Amanos but worse) that it's not made much progress among local breeders from what I understand.
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Old 02-20-2007, 06:48 PM   #3 (permalink)
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I love filter feeding shrimp! Very nice looking shrimp indeed!
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Old 02-20-2007, 07:32 PM   #4 (permalink)
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When I was a kid we called them bait. lol
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Old 02-21-2007, 06:00 AM   #5 (permalink)
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Hawaii Has some BEAUTIFUL shrimp!

Any luck breeding them yet

-Andrew
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Old 02-22-2007, 10:58 PM   #6 (permalink)
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no one can claim they have bred them yet on a consistant basis. and they are getting very hard to find. thanks Ken for the tip on looking at feeder shrimp tanks, found a couple that way and rescued them. now i have a reason to look at the feeder tanks again (my wild type neocaridina breed like rabbits so i never need to buy any for my daughters angel fish to eat).
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Old 02-23-2007, 01:31 AM   #7 (permalink)
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Kala'ole what what!!! ho mean dat shrimp! too bad its extinct in nature! ;-P i really like that last picture ken, very nice, maybe we could get an awesome pic of the fans actually open? (or maybe someone else acting as the shrimp filter feeding...just a hint of a little comedy we could add in )
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Old 02-23-2007, 07:38 AM   #8 (permalink)
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If it were extinct in nature, it'd be extinct period. As we're saying, it's been bred squat in captivity. It is not an easy to breed shrimp.

Andrew, nothing's going to change in a couple weeks.

The shrimp has an extremely difficult to replicate life cycle, involving a brackish/salt water multi-stage planktonic existance after flowing downstream, before a slow move back from salt to ever decreasing amounts of it into a full freshwater adult form that climbs all the way back up the mountain to live as filter feeder in fast water. As I said, really difficult to replicate in captivity.

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Old 02-23-2007, 08:08 AM   #9 (permalink)
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There's a park near Punchbowl that I used to dip net in back in the 70s. O'pae, O'opu, Guppies, Swordtails, Sailfin Mollys, and tadpoles galore back then.

Now, when I ask about the local streams my brother just warns me of leptospirosis. Hawaii is definitely not the same place of my childhood.
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Old 02-23-2007, 12:30 PM   #10 (permalink)
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Hey Steven,

Inspire knows they aren't extict! It is an inside Joke that he and I have due to the fact we have looked for them about a dozen times and had no luck finding them. Maybe we just need to go higher in the mountains or go to Hilo......either way they aren't as easy to find as "the authority on native species" says.

On another note I have talked many times to a guy down at Anuenue fisheries about breeding this shrimp. This guy has had luck breeding every shrimp out there, fresh and salt water but he can't breed these. As far as the difficult life cycle......nothing is really known except that at certain times in the year (usually spring and fall have the highest flow rate if I remember correclty) they can catch the babies in plankton nets as they drift down stream and observe them cralwing back up stream.........where the babies go and anything about the rest of their lifecycle currently is inference. I have seen no legitimate scientific reports of catching babies in the alawai (brackish) or the ocean (full salt) for that matter. If you have seen such reports please share.

Laters,

KT
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