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Old 07/20/2017, 03:28 PM   #1
aquatictec
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Join Date: Jul 2004
Posts: 499
Hawaiian Harlequin Shrimp Project

07/20/2017
Having succeeded with the Indonesian Harlequin Shrimp Hymenocera elegans we have turned our resources to breeding the Hawaiian Harlequin Shrimp Hymenocera picta.

Some experts have claimed them to be the same species but they look different, their larvae are colored differently, they have some behavioral differences and they come from different geographical areas. Sort of like the definition of a species.

Here is a link to our original work on H. elegans

http://www.reefcentral.com/forums/sh....php?t=2445470

We had a large Hawaiian pair. They had a few successful releases and then then the female died. We were not successful in raising the larvae.
We took the female form our Indo pair and put her in with the surviving Hawaiian male.

We also obtained another Hawaiian pair but they have not spawned yet.

We currently have about 20 larvae from the mixed pair. They were hatched on July 5th. They are noticeably smaller than H elegans larvae and have a green-brown tint instead of a brown tint.

Both pairs of Hawaiian shrimp and the mixed pair we now have managed to kill starfish long before they had consumed it. All the Indonesian harlequins that we had over the years managed to keep the starfish alive until it was nearly consumed. Because of this we feed them pieces parts to keep from wasting starfish.

We are still working on an alternative food source for harlequins shrimp. We can get them to eat most anything but they tend to die after a few weeks on other foods.


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Old 07/27/2017, 07:10 PM   #2
aquatictec
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still going

The 20 larvae are still going strong at 2 days.


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Old 10/03/2017, 04:33 PM   #3
aquatictec
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We had a very large release today October 3, 2017 in the thousands. I collected them and placed them in a Kreisel with T-iso and parvocalanus copepods


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