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G.okinawae (Yellow Coral Goby) Breeding Journal

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G.okinawae (Yellow Coral Goby) Breeding Journal

Postby chrismelb » Mon 04 Jul, 2016 11:36 am

One of my fav. fish have finally spawned. I have these in a 5ft Frag tank with nothing else but some peppermint shrimp, and of course some coral frags. I have had a pair of these spawn many years ago but had no success. The difficulty is getting the right sized foods for such tiny and delicate larvae, i believe. But as I love a challenge, i'm determined to raise these. These have been raised in captivity before, but by very few people and don't believe they have been done in AU. I will keep a journal here and on Marine Ornamental Fish and Invertebrate Breeders http://www.marinebreeder.org/forums/viewtopic.php?f=182&t=13275&p=102043#p102043, and a more detailed journal over at Marine Breeders Initiative http://www.mbisite.org/Forums/tm.aspx?m=99101. So feel free to check these out too. Although my posts will most likely be repetitious across these journals, the feedback from all the experts may vary :).

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Re: G.Okinawae (Yellow Coral Goby) Breeding Journal

Postby chrismelb » Mon 04 Jul, 2016 11:38 am

The batch I am currently trying to raise is the second as I missed the first spawn. Returning an hour later after switching all the lights and pumps off, I only saw three larvae when shining a torch. It looks like the entire nest hatched as there were no more eggs. Its possible amphipods etc got them. Next time will check sooner after lights out. The three were scooped up (collected) using a measuring spoon. Anyway as I'm only dealing with three this is a simple run to see if they can survive past their yolk reserve on a haphazard supply of harp pods and most likely ciliates. These are currently in a 2litre systemia tuppaware container that sits inside a tank. I'm keeping a compact fluorescent on for 24hrs a day.

Tried to get a close up of the eggs.
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Cheers,

Chris
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Re: G.Okinawae (Yellow Coral Goby) Breeding Journal

Postby chrismelb » Mon 04 Jul, 2016 11:42 am

Day #3 and to my surprise all three larvae are still alive!!!! I will see if i can get some pics of larvae soon but they wont be very good ones.
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Re: G.Okinawae (Yellow Coral Goby) Breeding Journal

Postby 555combo » Mon 04 Jul, 2016 12:11 pm

Looking forward to seeing this progress. Good luck.
Cheers,
Aaron.

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Re: G.Okinawae (Yellow Coral Goby) Breeding Journal

Postby Macca_75 » Mon 04 Jul, 2016 2:17 pm

Well done. Might have to buy one of those cheap USB magnifying scopes on ebay.

Hopefully each clutch gets you a step closer.
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Re: G.okinawae (Yellow Coral Goby) Breeding Journal

Postby chrismelb » Thu 07 Jul, 2016 10:22 pm

Well got larvae to Day #4 but then they died. Next batch due any day now, will try something a little more sophisticated if I can get my act together in time.
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Re: G.okinawae (Yellow Coral Goby) Breeding Journal

Postby damer » Wed 13 Jul, 2016 11:06 am

And he's back in the game!!

Good luck with them Chris, I look forward to seeing them go through met. :thumbsup:
"Don't ever give up!! Today might be your day for a miracle...."

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Re: G.okinawae (Yellow Coral Goby) Breeding Journal

Postby chrismelb » Mon 12 Jun, 2017 3:57 pm

Thanks so much Damien and nice to hear from you.
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Re: G.okinawae (Yellow Coral Goby) Breeding Journal

Postby chrismelb » Mon 12 Jun, 2017 3:58 pm

Finally got my act together, now that I have SS type rotifers, and collected around 70 larvae 3 days ago. They had very large yolk reserves and appeared very active, which is a good sign of larval health. Despite their energy, they never appeared to be great swimmers, even prior to collection. I can still see some alive at 3dph but definitely not 70. Hopefully over the next day or two I'll be able to confirm whether they are eating. I'll be over the moon even if I get one to meta :).

Stay tuned...

Chris
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Re: G.okinawae (Yellow Coral Goby) Breeding Journal

Postby chrismelb » Wed 14 Jun, 2017 11:08 am

Here is brief vid of them at 2 dph after live phyto (nannochlorpsis) cleared.
https://youtu.be/t3y00sKyauI

I think that their swim bladder is possibly not fully developed 2dph.
At 5dph (today) I think only two remain but they are in the water column now.
I have another batch hatching in 4 days and will try a BRT instead of my Kreisel, which is used more for observation and tended to get clogged with the nanno additions.
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Re: G.okinawae (Yellow Coral Goby) Breeding Journal

Postby Aydee » Wed 14 Jun, 2017 3:14 pm

Nice work. Look forwards to seeing how you go!

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Re: G.okinawae (Yellow Coral Goby) Breeding Journal

Postby Mr Miagi » Sat 17 Jun, 2017 7:57 pm

Awesome. Have subbed on Youtube, I hope you put up more videos! Do you have any recomended pages on FB to follow?!
--Cheers, Benny
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Re: G.okinawae (Yellow Coral Goby) Breeding Journal

Postby chrismelb » Sun 23 Jul, 2017 8:57 pm

Mr Miagi wrote:Awesome. Have subbed on Youtube, I hope you put up more videos! Do you have any recomended pages on FB to follow?!


Cheers, I will try to put some more vids up when I can. However, it is often hard to see them in the vid. Not FB, but Mofib.org and MBIsite.org are dedicated to the breeding of marine ornamentals.

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Re: G.okinawae (Yellow Coral Goby) Breeding Journal

Postby chrismelb » Sun 23 Jul, 2017 9:17 pm

Well, another two attempts failed miserably with none surviving past day 3, which explains my lack of posting.
The black round tub (BRT) didn't seem to improve things.

Now I'm feeding the broodstock heavier feeds and more often, which should help. I collected a large batch of larvae last night and managed to get a few snaps of them at 1dph under a microscope:

Image
Image

The large roundish bulge, I believe, is the larvae's yolk reserve and clearer circle above it is what I believe to be an inflated float bladder. The two black dots in the background should be SS rots.
For this run i'm using a 220mm cube glass tank with a heater & air stone to help see what's going on. The tank is lit using a Tunze Marine Eco Chic 8811 that sits on top of the tank. Still using SS rots and live Nannochloropsis, which may not be ideal but in a week or two I will start a culture of T.iso and hopefully Parvocalanus crassirostris, if I can find them here in Australia.

Chris
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Re: G.okinawae (Yellow Coral Goby) Breeding Journal

Postby chrismelb » Mon 24 Jul, 2017 9:56 pm

Well unfortunately this batch also didn't make it past 2DPH.
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Re: G.okinawae (Yellow Coral Goby) Breeding Journal

Postby CanIHazReef » Sat 09 Sep, 2017 9:59 pm

What are you currently trying to feed them?
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Re: G.okinawae (Yellow Coral Goby) Breeding Journal

Postby chrismelb » Sat 16 Sep, 2017 4:07 pm

I'm using SS type rotifers.
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Re: G.okinawae (Yellow Coral Goby) Breeding Journal

Postby saltydog » Sun 29 Oct, 2017 12:18 pm

How's it all going Chris?


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Re: G.okinawae (Yellow Coral Goby) Breeding Journal

Postby chrismelb » Tue 31 Oct, 2017 11:06 pm

[quote="saltydog"]How's it all going Chris?


Chris/quote]

Hi Chris,

I haven’t tried any new runs but really stoked to now have a calanoid copepod culture, which I collected locally, and phytoplankton strains for them. Phytoplantkon cultures are going gang busters and the next step is to increase the pod culture. Although it’s now a much bigger operation to try and raise fish which probably wholesale for less than a happy meal, I really believe there is a need to captive raise these as the wild collected are usually severely malnourished and don’t transition well to inert foods. Fingers crossed....
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Re: G.okinawae (Yellow Coral Goby) Breeding Journal

Postby saltydog » Mon 06 Nov, 2017 9:21 am

chrismelb wrote:stoked to now have a calanoid copepod culture, which I collected locally, and phytoplankton strains for them. Phytoplantkon cultures are going gang busters and the next step is to increase the pod culture

:-D
Have you been able to measure the nauplii size? Hope they scale up well :thumbsup:
I isolated one last year that showed some promise, but then wiped them out when out with bleach.
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Re: G.okinawae (Yellow Coral Goby) Breeding Journal

Postby chrismelb » Mon 27 Nov, 2017 9:51 pm

Bugger, sorry to hear. I’ve purchased a micro meter to measure them under my digi scope :). Just need to get the calanoids to decent population so that I can locate the 1st naupli stage.
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Re: G.okinawae (Yellow Coral Goby) Breeding Journal

Postby chrismelb » Mon 29 Oct, 2018 11:01 am

Sadly I lost one of the gobys. But I am still determined to breed these. I recently purchased another three and now I am just managing the aggression while I wait for them to form a pair. Yellow coral gobies are bi-directional protogynous hermaphrodites, meaning that they start out as females but can change into males and then back to females so any two can lead to a pair.
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Re: G.okinawae (Yellow Coral Goby) Breeding Journal

Postby sparker » Tue 27 Nov, 2018 3:29 pm

facinating - keep up the great work, keen to read along on the progress :)
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