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aquatictec
07/01/2013, 04:46 PM
Our mated pair of Harlequin shrimp released their second batch of larvae today!


https://sphotos-a.xx.fbcdn.net/hphotos-prn2/971323_311574235644899_1840363358_n.jpg
https://fbcdn-sphotos-b-a.akamaihd.net/hphotos-ak-ash3/1010796_311574222311567_37915452_n.jpg
https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-ash4/1005425_311574245644898_1180807035_n.jpg
https://sphotos-b.xx.fbcdn.net/hphotos-prn2/1045085_311574248978231_1700569184_n.jpg

Aquatic Technology
26966 Royalton Road
Columbia Station, OH 44028
(440) 236 8330

blazzing_ray
07/01/2013, 05:26 PM
i was there lol

aquatictec
12/17/2013, 12:49 PM
On December 15th, 2013 another batch was released. We collected 6 groups of 10 or more each and placed them in 1 liter plastic bottles with light aeration. We added various phytoplankton cultures and phytoplankton mixed with rotifers to each bottle.
As of December 17th all the cultures are still alive.

The last batch which perished did not have any aeration and we did not monitor them daily.

aquatictec
12/20/2013, 01:57 PM
On December 20th all test batches appear to have passed on to the great beyond:thumbdown
Next time we would like to try shallow black containers instead of clear quart bottles.
If any one has any ideas please feel free to email us at:

[email protected]


We would appreciate your help.

Aquatic Technology
26966 Royalton Road
Columbia Station, OH 44028
(440) 236 8330

Calappidae
01/07/2014, 01:37 PM
It's very delicate, I've read the bubbles/water flow alone is too much for them to handle. I've lost soo many adult harlequins to 50GPH pumps let alone larva. Mine also struggle moving around the tank with powerheads in it..

Water quality is another huge issue.. you can't have filteration, yet you must feed them, raising ammonia, have swinging ph and salinity from evaporation, this is truely an ultimate challenge. It ain't like these are hardy brine shrimp capable of dealing with terrible water quality, they're very sensitive. Crinoids are easier than this.

Here's a good site on somebody's full story and how they pulled it off with breeding.

http://chucksaddiction.com/harlequinshrimp.html

aquatictec
03/02/2014, 11:15 AM
We must have missed the January release.

The pair released their larvae on February 28th, 2014.We forgot to collect them the first day so we missed most of them.

We collected about 20 larvae on March 1st. We put them in a white bucket with aeration from a rigid airline and added rotifers. On the second we added 2 species of phytoplankton, some unknown copepod species subculture from our rotifer tanks, and some week old baby brine. They appear to be eating the baby brine.

Our plan is to keep the water slightly tinted with the live phytoplankton, to monitor the brine shrimp level, and keep our fingers crossed that they make it past day 5.

aquatictec
03/06/2014, 12:09 PM
There appear to be at least 4 that have survived their first molt. The brine shrimp in the container with them appear to be too large for the larvae to eat so we will start supplementing with fresh hatch baby brine. We will continue the regime of tinting the water 2x daily with phytoplankton and maintaining baby brine at .5-1 per ml.

Aquatic Technology
26966 Royalton Road
Columbia Station, OH 44028

aquatictec
03/08/2014, 10:19 AM
Same regime. 2x daily top off phytoplankton and adjust bbs density

aquatictec
03/09/2014, 11:32 AM
Not sure why they are disappearing. My guess is we didn't pull them out of the tank until they were already 1 day old and they missed a day of eating.

shifty51008
03/15/2014, 06:46 AM
have you tried rotifers for a 1st food, I am wondering if the bbs is to big still.

aquatictec
03/15/2014, 07:23 PM
The last of them have passed away. Yes we have tried rotifers. They are probably too small. The brine copepods and phyto was working well. The last batch most likely died because they didn't get to eat until they were a day old and we didn't start with that many.

shifty51008
03/17/2014, 07:32 AM
after some research I have found out the most popular way of raising the babies is by using the kreisel system rather than a standard tank. also they use a mix of rotifers, cocopods, and brine shrimp alog with phyto. after meta they do need starfish though, linkia is the prefered. also a few people said that they can act dead for a while just laying on the bottom but then will take off lighting fast, not sure if you ever noticed that or not.

I wish you luck raising them though.

aquatictec
03/26/2014, 09:14 AM
On March 24th in the evening I noticed we had more larvae in the tank and they weren't there in the morning.

They must have hatched during the day. We collected about 63 and transferred them to a 3 gallon white bucket with aeration from 1 rigid air line and added phytoplankton, rotifers, fresh hatched baby brine shrimp and a few copepods from the last attempt.
I shut the pump down to the filter compartment overnight and checked the next morning for more but here weren't any.
I also noted a molt in the tank on the following day (March 25th)

aquatictec
05/05/2014, 11:01 AM
check out the after birth video on our facebook page

https://www.facebook.com/AquaticTechnologyOhio?ref=stream&hc_location=timeline


Does any one local have any marine planktonic copepod cultures going they could part with for research on raising these guys. We would be glad to share the offspring if we are successful in raising them.


Aquatic Technology
26966 Royalton Road
Columbia Station, OH 44028
(440) 236 8330

captive raised harlequin shrimp
breeding harlequin shrimp

aquatictec
05/19/2014, 12:44 PM
update: May 19th
4 left
We have not done anything different than last time other than changing their container every week
We are going to try to grow some different species of copepods and try them as a food source

aquatictec
05/21/2014, 11:34 AM
update may 21st none left
longest lasted 15 days

aquatictec
06/30/2014, 10:45 AM
June 13th we collected another batch of about 112
they were probably born the day before because there were so few collected.
As of about 2 weeks later they were all gone
We need to culture a different food for them.
It appears they can not be cultured on brine and rotifers alone

Calappidae
07/02/2014, 07:27 PM
I saw mine eating marine snow. They were nippling on it (I needed a magnefying glass)

aquatictec
07/04/2014, 12:14 PM
Did you see the larvae eating it or the adults?
Have you been trying to raise the larvae?
How many days have you kept the larvae alive?
How many larvae do you collect on each batch?

aquatictec
09/17/2014, 03:33 PM
http://www.aquatictech.com/images/harlequin/DSC_1204.jpg