Best breeding stratagey

Discussions about sexual behavior, mating, spawning, eggs, hatching, fry, and so on.

Re: Best breeding stratagey

Postby shift » Wed Mar 06, 2013 12:04 am

Well it looks like my breeding trap works, i just pulled it out and spotted a few eggs in the bottom, so i swished the trap moss and bottom into the fry tank and set it back in the tank.. hopefully the systems works.. just rinse it out every few days :D

Image
shift
 
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Re: Best breeding stratagey

Postby Piotr K. » Wed Mar 06, 2013 2:07 am

Hey, GREAT!! :) :) So the mesh seems to be the right size! (as long as the eggs didn't fall down through the gap between the mesh and the wall of the trap). BTW - what is the exact size of the "eyes"? Can you measure it?

:)
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Re: Best breeding stratagey

Postby shift » Wed Mar 06, 2013 2:49 am

It looks like they are just over 2mm.

There were egg dots through out so i am quite certain they fell thorough the holes. Not bad considering its only been in there 2 days :)
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Re: Best breeding stratagey

Postby shift » Tue Mar 19, 2013 12:05 am

So my egg traps seem to be working. I built a second one using java moss instead of yarn which seems to get the majority of the eggs now. I left it in for 2 days and dumped into my fry tank today and counted about 8 eggs. Ill give it 2-3 more days then re-check/test the 2 again. It doesn't sounds like its getting quite the output as the full java moss tank but then again this is a day or two compared to a week of spawning :)

Piotr- how's yours testings going? what seems to be working best for you?
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Re: Best breeding stratagey

Postby Piotr K. » Tue Mar 19, 2013 1:55 am

My tests are still under way, however I already have some very interesting results :) I'll post them ASAP, the problem is that at the moment I don't have much time... (was working on the fishroom, relocating CPDs from 18 tanks to another 18 tanks, setting up the latter, and in the meantime quitting my job at the Uni and starting my own company :) ).

Be back soon :)
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Re: Best breeding stratagey

Postby shift » Tue Apr 02, 2013 1:43 pm

Any updates Piotr K ? :)
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Re: Best breeding stratagey

Postby Piotr K. » Wed Apr 03, 2013 3:36 am

Today is the last day of my work, the hectic period is almost over :) I have to count all the fries in various tanks, I should post the info till the end of the week :)
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Re: Best breeding stratagey

Postby shift » Tue Apr 09, 2013 11:38 am

Piotr... The suspense is killing me! ;)
shift
 
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Re: Best breeding stratagey

Postby Piotr K. » Tue Apr 09, 2013 9:39 pm

Sorry, I'm still working on the newest video, it's quite difficult and time consuming to make the commentary... (I run internet aquarium television, BTW: http://www.youtube.com/DefiniteAquascapeTV), but I promise I'll post the results today :) (it's April the 10th in Poland :) ).
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Re: Best breeding stratagey

Postby Piotr K. » Wed Apr 10, 2013 4:25 pm

OK, here it is - I decided to post a whole table with the results :) These data are for just one "breeding run", i.e. adult fish were kept in each tank (aquarium / plastic container) for 3-4 weeks or so, and then removed to another set of 18 containers (all being the same, for a change). After few days fries started to appear, and the numbers I present in the table are derived from today's counting - after about 3 weeks since the removing of the parents.

Conclusions: At the moment I can't see any clear pattern depending on the substrate; most fries are originating from coarse/mop, coarse/moss and sand/mop combinations, but this very well might be due a pure chance. One thing for sure is that there are far more fries from plastic containers (Px) (25 on the average) than from aquariums (Ax) (7 on the average) - I have no idea why, maybe it's the area of the bottom (plastic containers are lower and wider), maybe it's something else... This is why I will make at least one more run in exactly the same combination, to see if there will be any significant differences in the frequencies of fries.

If there is any statistician among you guys here, you're welcome to make some calculations on these data - I'll try to make some, but I'm not an expert on this :) Looking forward to your comments / questions :)

Image

Explanations:

Tank (all are about 25 liters):
Ax - Aquarium number x
Px - plastic container number x

Bottom (type of substrate on the bottom of the tanks):
sand - fine sand
fine - fine gravel (about 2-3 mm diameter), 100% quartz
old fine - my old fine gravel (about 2-3 mm diameter), mixture of various rocks, raises pH and GH slightly
coarse - coarse gravel (6-8 mm diameter), 100% quartz

Substrate (type of spawning substrate):
moss - java moss, covering almost whole bottom
mop - mop of acrylic wool, 150 "circles", length about 20 cm

males, females - pretty obvious, letters A, B and C denote different sources of fish

fries - number of fries counted
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Re: Best breeding stratagey

Postby shift » Wed Apr 10, 2013 8:47 pm

Excellent results!

Did you try bare bottom tank at all?

Also did you condition the fish at all or just put them all in together at once?

What did you feed time?
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Re: Best breeding stratagey

Postby Piotr K. » Wed Apr 10, 2013 9:59 pm

In my experience, it's not possible to condition CPDs like Danio rerio - after sevaral days without males females start to die. It seems that tbey need to get rid of the eggs on a constant basis. So I "condition" them putting the desired set of fish together (like 2M+3F) in the breeder tank, and feed them a lot of live food (bloodworms, "glassworms" [not sure what's the English name], adult artemia, newly hatched artrmia nauplii).

No, I didn't try bare bottom, because IMHO it doesn't make any sense - without substrate the eggs are exposed for being eaten (the same as on fine sand, in fact), and there is no filtration provided by the substrate.

"What did you feed time?" - what does it mean? How often do I feed...?
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Re: Best breeding stratagey

Postby shift » Wed Apr 10, 2013 11:38 pm

Sorry i meant what did you feed them (which you answered.. darn auto correct!!) but you also brought up a good question..

1. How often did you feed them?
2. What temperature did you keep the water, how often did you change it?
3. Was your substrate light or dark in color?
4. Did all tanks have the same lighting? If so what was the light and how many hours per day was it on?

I appreciate you posting your tests. its inspiring me to try some of them as well.

Any chance you have some photos of your breeding setups?
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Re: Best breeding stratagey

Postby Piotr K. » Fri Apr 12, 2013 12:46 am

> 1. How often did you feed them?

Twice a day, sometimes three times a day.

> 2. What temperature did you keep the water, how often did you change it?

22-24 C deg, I usually make about 30% water changes twice a week, but recently I had no time at all, so I didn't make any water changes for a month or so :) Still, NO3 levels are not going higher than 25-50 mg / liter (JBL 6in1 test stripes)

> 3. Was your substrate light or dark in color?

All substrates except "old fine gravel" are light. Not white, but rather yellowish, sort of :)

> 4. Did all tanks have the same lighting? If so what was the light and how many hours per day was it on?

Each tank has a 1W LED module over it. The lighting is turned on during 1:30PM-9:45PM, plus the daylight coming from the window.

> I appreciate you posting your tests. its inspiring me to try some of them as well.

Do it, that's the only way to know something for sure.

> Any chance you have some photos of your breeding setups?

No problemo, but gimme some time :)
Piotr K.
 
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Re: Best breeding stratagey

Postby sindari » Sat Jul 13, 2013 12:58 pm

Dennis for the black coarse gravel do you just use the typical aquarium gravel most beginners get in clown puke colors?

What's your process and how are the rest of your tanks set up for the grow out on up? You described the process for the 5 - 5.5 gallon tanks and mentioned transitioning them to 20 gallon longs. How are they set up and how many do you use for grow out?

Thanks.
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