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Breeding: Akysis maculipinnis
November 14, 2012
3:52 pm
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FKS
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Edit: sorry guys, but the software sucks! So, just some links to pictures. Hope that works...

 

So. Not finished the very work intensive raising of the very small fry, but let me briefly summarize things:

There are 1,1 of the in total 4 Akysis that started spawning (note the blue belly of the female).

http://i824.photobucket.com/al.....s_pair.jpg

 

This is the breeding tank. Note the pump and the two boxes (one with gravel, one with a 4-mm net. This is absolutly necessary because otherwise the adults will get every single egg!!! They spwan either in the strong current of the pump or directly above the bravle bed.

http://www.quarantaenebecken.d.....6664;image

 

The eggs are very small (~0.6-0.7 mm). Maximum number was 60 in one night, while I think that only one part of the eggs reaches the save boxes, while the other part is eaten by the adults.

http://www.quarantaenebecken.d.....6666;image

 

The eggs are really as blue as the belly of the females.

http://www.quarantaenebecken.d.....6620;image

 

Freshly hatched (after 3 days, 24°):

http://www.quarantaenebecken.d.....6626;image

 

... after 1 day:

http://www.quarantaenebecken.d.....6634;image

 

... 2 days...

http://www.quarantaenebecken.d.....6636;image

 

... 5 days (note that there is still some bluish yolk, while they already take micro worms and sfreshly hatched Artemia)...

http://www.quarantaenebecken.d.....6686;image

 

... one week...

http://www.quarantaenebecken.d.....6690;image

 

... day 8 and 9...

http://www.quarantaenebecken.d.....6708;image

 

... day 10 and 11 (note that difference in size!)...

http://www.quarantaenebecken.d.....6744;image

 

To be continued...

November 14, 2012
9:30 pm
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Matt
Málaga, Spain
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Super cool and brilliant photos too, great to see you around again Frank! Ingenious breeding-tank design - presumably you just lift out the boxes once you see eggs inside?

About the forum software, apologies and yes, one or two things could be vastly improved. Hope to do something about that soon.

Cake or death?
November 15, 2012
8:56 am
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retro_gk
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Quite an achievement, congratulations!

I'd love to hear more about the actual spawning. Sounds like they spray the eggs around and make no effort to conceal or stick them a-la Corydoras?

I'd also like to see more pictures of the spawning tank, if possible.

November 15, 2012
1:02 pm
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FKS
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Matt said
 Ingenious breeding-tank design - presumably you just lift out the boxes once you see eggs inside?

yes. This is the easy part of the story. Then things are getting complicated. Really a tough job raising that fry.

 

Sounds like they spray the eggs around and make no effort to conceal or stick them a-la Corydoras?

As I wrote in the first post, they spwan either in the strong current of the pump or directly above the gravel bed. So, neither spraying nor sticking. It is more "targeting" ;)

BTW: no chance for a video of that. First it is at night, second it is realy, really fast. I could give it a try at the weekend stitting in front of the tank with the cam ready... the whole night.

 

cheers

November 16, 2012
2:14 am
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oaken
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Very impressive! And like Matt said, ingenious setup. Is there only that pair in the tank or are all four fish in the same tank? How big are the fry when free swimming?

November 16, 2012
8:10 am
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FKS
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Hey,

its a group of 6 (the "4" in my first post was wrong) all in the same tank. But actually I think it is always (mostly) the same pair that is mating.

The fry is 3-4 mm when free swimming.

cheers

November 19, 2012
10:16 pm
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FKS
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Almost 10 mm...

Image Enlarger

November 20, 2012
9:07 am
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Matt
Málaga, Spain
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Really cool Frank.Cool How many have you managed to this size?

Cake or death?
November 21, 2012
7:55 am
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FKS
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Matt said
How many have you managed to this size?

Hey Matt,

there are around 25 of 10 mm, 30+ of 6-7 mm and still 50+ of <5 mm. Actually I don't want to raise many of these guys. I guess Akysis maculipinnis is not a fish everybody wants...

 

Image Enlarger

November 21, 2012
8:06 am
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Matt
Málaga, Spain
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Perhaps, but it's quite an achievment nevertheless!

Would you mind if some of this information was added to the species profile page?

Cake or death?
November 21, 2012
9:39 am
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Rüdiger
Brunswick / Germany
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May 2, 2012
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Hi Frank,
I would love to take some. Perhaps if you'd let me know via PM whereabouts you are, we could make a plan????
Regards
R.

If you must insist on living in a box ...... at least do your thinking outside.
November 21, 2012
9:33 pm
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FKS
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Matt said
Would you mind if some of this information was added to the species profile page?

yes indeed. If you need some further information just let me know.

 

@Rüdiger: ich melde mich wenn sie abgabebereit sind bzw. wird das hier auch stehen. Bin aus Aachen.

 

cheers

Frank

March 19, 2013
5:11 pm
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FKS
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Hey,

I was able to finally raise ca. 150 Akysis maculipinnis, with some of them already >30 mm now (and ready for disposal...) .

Anyway, I am still asking why Akysis should produce such colorful eggs!? For the adults this doesn't make any sense, because Akysis are almost blind. So no attraction using bluish bellies or something like that. One thing is that they were caught in a river rich of Cryptocoryne spp., which can be of bluish or violet color. So maybe a camouflage of the eggs?

Any suggestions from your side?

 

cheers

Frank

November 16, 2013
5:07 pm
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FKS
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FYI: my article about breeding Akysis maculipinnis was published in the current issue of the Amazonas magazine. We're looking forward to the english US/UK version...

 

cheers

November 25, 2013
12:36 pm
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Matt
Málaga, Spain
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That's great news Frank. :)

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