Breeding Journal, Species: [Hymenocera picta]

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aquatictec
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Breeding Journal, Species: [Hymenocera picta] - Saturday, January 14, 2017 7:56 PM
Breeding Journal DataSheet
This first post should be updated regularly to include new information as events take place or changes are made to your system

General
Species:  Hymenocera picta
Social Structure:  pair
Size of Individuals:  2.5"
Age of Individuals:  unknown wild caught
Date added to Tank:  01/17/2017

Broodstock Tank Details
Size of Tank:  8 gallon
Substrate Details:  live sand
Filtration Details:  protein skimmer, sponge fiter, ceramic media, charcoal
Water Changes:  weekly 2 gallons
Water Temperature:  80 F
Lighting:  flipper led
Lighting Cycle:  12 on 12 0ff
Other Tank Inhabitants:  none

Broodstock Feeding Details
Food Types:  pieces of chocolate chip starfish 
Feeding Schedule:  give them a piece daily 

Spawning Details
Date of First Spawn:  Oct 21, 2017
Spawn Time of Day:  not observed but happens after molt
Dates of Consecutive Spawns:  not recorded but approx. every 20-21 days
Courtship Details:   dance around and wave claws male mounts female from behind or side
Egg Size:  very small maybe 50 microns
Egg Color:  dark brown
Egg Count:  1000 plus

Hatch Details
Hatch Date:  Nov 10, 2017
Hatch Time of Day:  morning or previous night
# Days after Spawn:  20
Larvae Description:  brownish green


Larval Tank Details
Temperature:  80 F
Size of Larval Tank: 55 gallon  
Substrate Details: none
Other Tank Decor:  none
Filtration Details:  air driven sponge, PO4 reactor, protein skimmer
Lighting:  20 wqatt UV covers 2 Kreisels
Lighting Cycle:  12/12
Water Changes:  weekly 20 gallons and as necessary to keep ammonia down

Larval Feeding Details
Food Types:  Parvocalanus
Feeding Schedule:  2x daily target 3-5pods/ml

Metamorphosis/Settlement
Date of Settlement Start:  Dec 18 2017
Days after Hatch:  38
Date of Settlement End:  Jan 1 2018
Description of Fry:  tiny adults 1-2mm long

Grow-Out Tank Details

Temperature:  80 F
Size of Grow-Out Tank:  55 gallons
Substrate Details:  none bottom painted white on outside
Other Tank Decor:  none
Filtration Details:  air driven sponge, PO4 reactor, protein skimmer
Lighting:  20 watt LED split between 2 tanks
Lighting Cycle:  12/12
Water Changes:  weekly 20 gallons and as necessary to keep ammonia down
Size at Transfer:  1-2mm
Age at Transfer:  at settlement

Grow-Out Feeding Details
Food Types:  asterina starfish
Feeding Schedule:daily

Additional Information
(No Pictures or Videos in the Section Please)
Miscellaneous Information: 



You will be required to provide photographic evidence in this thread of each event submitted for the MBI Program.
If your thread does not contain these photos the MBI Committee will not be able to approve your reports.

<message edited by aquatictec on Tuesday, June 26, 2018 2:40 PM>

aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Saturday, January 14, 2017 7:58 PM
We are getting our first pair next week
They are currently at a wholesaler in Los Angeles
We are setting up a JBJ 8 gallon rimless aquarium for them in our lab

<message edited by aquatictec on Sunday, January 15, 2017 12:19 PM>

aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Thursday, January 19, 2017 1:08 PM
The pair in their new home in our lab
we got them 01/18/2017
they have not touched their starfish yet as of 01/19/2017


aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Thursday, February 23, 2017 12:19 PM
They released their first a clutch last night.
Unfortunately our filtration system ate them.  We only collected 5 which we dumped in with our few week old H elegans larvae.  They will probably be eaten.
We will change our filter screens
the larvae were much smaller than the H. elegans larvae
 
Will get pictures and sizes on the next batch.

aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Tuesday, March 21, 2017 6:48 PM
They released their second clutch last full moon.  We really were not ready for them.  We collected 512.
We did not have enough copepods and have since lost all of them

aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Thursday, March 30, 2017 7:12 PM
It seems like they missed a mating opportunity or we missed a batch.
The next release if it happens should be around May 16
<message edited by aquatictec on Tuesday, May 09, 2017 2:55 PM>

aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Tuesday, May 23, 2017 12:08 PM
May 23 We have been checking the egg clutch 3x daily for signs of hatching for the past 2 weeks. 
The eggs were getting larger each day.  They were there the night of the 21st and gone the morning of the 22nd  There were no larvae and the eggs were all gone.  There were no signs of any larvae in the filter sponge on the tank.  I am guessing she dropped the clutch and the bristle worms ate them all. 
It doesn't make too much sense.  The eggs must have been fertile because they were getting larger. 
On another note:  Our pair of shrimp is not the brightest.  I am not sure if I can blame them but between them and the bristle worms the starfish is dead long before the shrimp finish eating it.  The starfish starts to rot and has to be removed

aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Saturday, July 15, 2017 8:20 PM
Our female died so we took the female from our H. elegans pair and paired her with our male H. picta.  We have a few survivors of their first hatch in a Kreisel now.
We also have obtained a second smaller pair of H. picta.  They have not spawned yet.
Both pairs of picta and the mixed pair killed the starfish long before they were done eating it and we had to discard the rotting remains.  All the pairs of elegans we had over the years had no problem keeping the starfish alive until the end.
To keep from wasting starfish we feed the bits and pieces.

aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Tuesday, October 03, 2017 1:25 PM
We obtained a new smaller Hawaiian pair a few months ago
They had a larva release today 10/3/2017
Rather than chase them with a baster I strained the tank water through a 105 micron net and returned the water to the parents tank and put the larvae in a Kreisel.
I am guessing there were way over 1000.
I dumped in a quart of T-iso and 4 quarts of parvocalanus
<message edited by aquatictec on Thursday, January 11, 2018 6:31 PM>

aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Saturday, October 07, 2017 4:36 PM
fed 25K parvo copepods in AM
at 200 there were none left
fed another 25k parvo copepods at 4pm
added 5k apocyclops copepods also
plan on culturing pseudodiaptomus if we can get a good culture
 
We lost this batch later due to hydroids growing on the sides of the Kreisel
<message edited by aquatictec on Thursday, January 11, 2018 6:34 PM>

aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Monday, December 18, 2017 6:02 PM
On November 10th our  Hawaiian pair released a clutch
We moved 150 of them to a Kreisel for growout
 
On December 18th we had 24 so far settle out at 38 days.   They are much smaller than the Indonesian harlequins we raised before but the also settled out much earlier
They were fed enough Parvo 2x daily to keep the parvo density at 3-4 per ml
We added 500ml of iso daily to the Kreisel.
At 30 days they were transferred to another Kreisel to avoid hydroid infestation.
The ones that have settled have been transferred to a 55 gallon grow out tank 
 

<message edited by aquatictec on Thursday, January 11, 2018 6:35 PM>

aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Monday, December 18, 2017 6:16 PM

This is what has settled so far and the dates
24 on Dec 18
7 on Dec 20
27 on Dec 24
12 on Dec 27
5 on Dec 28
6 on January 1st
There are still some twirling arround that haven't settled yet
The stretched out settlement period might be a food issue
We are having an iso issue so we don't have any parvo to feed and have switched to apocyclops
<message edited by aquatictec on Thursday, January 04, 2018 10:45 AM>

aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Thursday, January 11, 2018 6:07 PM
We had a total of 81 Hawaiian Harlequin shrimp settle
The parents released over a thousand larvae
Due to the large amount of copepods required to raise them we only collected about 150 to raise to settlement
Settlement took place over a 19 day period.,
At the beginning of settlement we ran out of parvo and iso and had to feed apocyclops grown on rotigrow.
That may have stretched out the time to settle

As opposed to the Harlequin shrimp from Indonesia
The Hawaiians:
were much smaller and greener as opposed to brown at release
settled in less time and were smaller at settlement
are a different color (more yellow)

Adult Hawaiian Harlequin shrimp:
tend to grow larger than Indonesian shrimp
are yellower
Are not as adept at keeping a starfish alive until it is all consumed

We have mixed pairs and they have produced larvae. We have not got them to settlement yet

The two "species"
are reproductively isolated from each other.
are most likely capable of producing fertile mixed offspring but that remains to be seen
Have different characteristics (color, larval, juvenile and adult size)
Appear to have different settlement periods




aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Friday, January 12, 2018 4:10 PM
In scientific terms:
Absolutely Gorgeous
Hymenocera picta
We have 81 of them between 6 and 25 days old
 

<message edited by aquatictec on Friday, January 12, 2018 6:13 PM>

aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Friday, February 16, 2018 5:13 PM
70 days!
No losses

aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Tuesday, March 13, 2018 5:40 PM
98 days past settlement
no losses
still cant sex them
 

aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Thursday, April 05, 2018 7:12 PM
We lost about half of them to a filter malfunction.  We have about 40 left.  If they take the same time as their Indonesian kin H. elegans they should start reaching sexual maturity somewhere between August 1st and 19th this year

aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Friday, July 06, 2018 6:30 PM
Female with eggs
 

 
 

aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Friday, July 06, 2018 6:31 PM
Just released larvae
 


aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Friday, July 06, 2018 6:34 PM
Herd of Hawaiian harlequins 190dps
 

 
 

aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Tuesday, July 10, 2018 2:38 PM
Only one shrimp from the December 18 and following settlement has show color on its abdomen so far.  We paired it with a wild male.  They had their first larval release today or last night.  I am really not sure how many larvae I collected I am guessing around 40.  She had way more we just got to them too late.

aquatictec
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Re: Breeding Journal, Species: [Hymenocera picta] - Thursday, July 26, 2018 6:09 PM
We have a new pair.  A wild male and a tank raised female.  They just released their first batch of eggs on July 10th.  They seem to have all disappeared as of today 16dph.  They just gradually disappeared.  I can't point to anything we did wrong.  My guess is initial larval size and health.