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Paracheirodon spp.
April 8, 2013
3:50 pm
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Matt
Málaga, Spain
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Has anyone ever bred any of these? Looking for details for the three profiles please!

Cake or death?
April 11, 2013
2:31 pm
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Matt
Málaga, Spain
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Seeing how the first question went so well (Laugh), has anyone had any long-term success keeping P. simulans in anything but soft, acidic water?

Cake or death?
April 11, 2013
3:46 pm
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Rüdiger
Brunswick / Germany
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Hi Matt,

I am keepeing a healthy shoal of 20 P. simulans for more than a year without any losses in my S.A. community. I wouldn't regard my water as exactly soft and acidic I guess. But judge for yourself:

pH:    7.5 - 8

TDS:  232 ppm

GH:    ~ 7

KH:    3 - 5 (due to fluctuating quality of tap water)

 

They have spawned occasionally but in that tank there's no chance of any fry coming up.

Regards

R.

If you must insist on living in a box ...... at least do your thinking outside.
April 11, 2013
5:54 pm
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hachge
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To me pH below 7 is acidic and soft water is below180 µS Laugh

My Betta and Paros are pH less than 4.5 and hardness 20/50 µS but this is extrem conditions for fish

April 12, 2013
11:38 am
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oaken
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Did you try talking to Karel Zahrádka? I remember him posting pretty detailed reports about it on petfrd.

April 12, 2013
11:54 am
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Matt
Málaga, Spain
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Ok great, guess I can adjust the profile details a little based on your experience Rudi.

Yep Herve, think the same. Smile

Thanks for the heads up Gustav. Will ask Karel as well.

Cake or death?
April 12, 2013
1:10 pm
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Rüdiger
Brunswick / Germany
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Hi Matt,

you accidentally put the pH values into the temperature slot!! :-)

But as you're busy with that anyway let me give you my temp regimen on the P. simulans, sice it deviates from commonly recommended temperatures quite a bit (as usual :-D ).

During the heating period I keep te tank at ~ 24° C.

Come spring, after switching the heater off,  it drops to 21 - 22° C.

When it gets really warm outside teperatures rise to a max of 28° C sofar.

Late fall before I switch the heater on again temps drop to about 22° C again.

I could not observe any difference in activity, health or (perceived) comfort in my specimens throughout the whole range of temperatures.

All (observed) spawnings have taken place at around 25° C.

Regards

R.

 

If you must insist on living in a box ...... at least do your thinking outside.
April 15, 2013
8:30 am
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Matt
Málaga, Spain
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Just testing, just testing. Laugh Fixed now!

Thanks for the info Rudi. Apparently P. simulans lives in terra firme streams in the wild which tend to be quite warm but your experience just goes to show what kind of range such a small fish is capable of withstanding.

Cake or death?
April 15, 2013
1:18 pm
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Rüdiger
Brunswick / Germany
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Yeah Matt, I was surprised myself. When I first dropped temps I did it of course very slowly, expecting especially P. simulans to show signs of discomfort sooner rather than later. But as I said, no signs whatsoever on the contrary, they seem to enjoy the change.

If you must insist on living in a box ...... at least do your thinking outside.
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