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Diapteron cyanostictum
May 20, 2011
7:35 pm
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Senor Bastardo
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As I wrote in a previous post I have aquired three killies over the last month, all quite unusual.

The second one is Diapteron cyanostictum "PEG98/8".

This little beautiful killi is from Gabon and reaches about 3-4 cm in total length. The fish in itself is quite bland but if you shine a torchlight at the the male you will see som quite marvelous colours. Once again I have to excuse myself for the poor quality of the pictures. The male (wich is the one that sports the fantastic colours) is extremely shy.

He really is shy!

[Image Can Not Be Found]

In this shot you get an idea of the colours they can show.

[Image Can Not Be Found]

Attached files

[Image Can Not Be Found] [Image Can Not Be Found]

May 21, 2011
12:13 am
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oaken
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Nice. Always been interested in trying out Diapteron as well. But a bit worried I wouldn't be able to keep the temperature low enough. During the summer anyway.

May 21, 2011
12:14 pm
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Matt
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Nice - what kind of temperature should they be kept at then chaps?

Cake or death?
May 21, 2011
5:20 pm
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Senor Bastardo
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They´re supposed to be kept really cool. Ideally 18-22 C, wich my apartment exceeds by several degrees. But I keep on top of water changes and keep an oxydator in the tank so they should be fine.

A friend of mine has bred this very strain in normal indoor temperature and managed to get quite a lot of fry. During the worst (depending on what you prioritize) weeks of summer the fry that hatched had quite a lot of health problems. During the rest of the year the fry turned out fine.

May 21, 2011
6:09 pm
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Matt
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Interesting - is the natural habitat high altitude or something?

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May 21, 2011
6:59 pm
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oaken
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QUOTE (Matt @ May 21 2011, 07:52 PM) < {POST_SNAPBACK}>
Interesting - is the natural habitat high altitude or something?

I think its more like cool, shaded forest streams - think Barbus hulstaerti.

May 21, 2011
7:10 pm
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oaken
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QUOTE (oaken @ May 21 2011, 08:42 PM) < {POST_SNAPBACK}>
I think its more like cool, shaded forest streams - think Barbus hulstaerti.

The temperature thing goes for a lot of west african killies btw, Matt. Mainly for Aphyosemion sp. though.

May 21, 2011
8:11 pm
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Senor Bastardo
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Your quite right oaken. Many african killies are found in shallow shaded forest streams, so while the country might be hot their habitat is kept cool by the forest.

In the case of Africa the lumber industry and deforestation means that a lot of killies are losing their habitats. Thats why Gabon is quite a good place for finding killies their economy isn´t based around timber but rather oil wich (lucky for the fish) is based around the coastal areas and lumber is a minor industry.

May 24, 2011
6:25 pm
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Folköl
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Hi,

I´m following this forum quite a while. Now I thought it´s time to sing up and write something.
I´m also keeping D. cyanostictum and kept also D. georgiae for a short time.

For my feeling they can handle higher temperatures for a short while but I made the experience
that temperatures over 20°C have a bad impact on the sex ratio.
I had mainly males coming up so I started to collect the eggs only in the wintertime and raise the fry and it became better. The breader where I got them from keeps them in a storage outside the house with air conditioning and he had more females than males.

Here an old picture. You can see a bad habit they like to attack the fins.

[Image Can Not Be Found]

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[Image Can Not Be Found]

May 24, 2011
9:35 pm
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oaken
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Really nice! If I manage to keep my aquariums cool during the summer I might just buy a pair or two of some species on Aquabid. Quite tempted to do so anyway /wub.gif" style="vertical-align:middle" emoid=":wub:" border="0" alt="wub.gif" />

May 24, 2011
10:13 pm
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Matt
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Agreed - lovely! Confused though. All the comments here regarding low temperature relate to egg and fry development. How do the adults do at higher temps?

Welcome Folköl, by the way. /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

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May 25, 2011
6:18 am
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Senor Bastardo
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The fish can cope with higher temperatueres without much issues. As Folköl stated the egg laying, sex ratio and health of the fry can be impaired by higher temperatures.

To Folköl: as I wrote in a previous post in this thread a friend of mine has been quite succesful at breeding these in normal room temperature witout issues with the exception of the hottest weeks during the last two summers when the fry developed curves in the spine and so forth. So it can be done, it is (according to my friend and not scientifically validated) a matter of keeping the water saturated with oxygen and the water quality excellent.

But we´ll see in the coming months if I´m succesfull or not, the fish are quite young still and haven´t started breeding just yet.

Excellent pictures of a wonderful fish!

May 25, 2011
7:08 am
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Matt
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That makes sense Krister, looking at Gabon's climate I'm guessing it breeds during the rainy season when water temperatures should be cooler. Thanks for the info. /thumbs_up.gif" style="vertical-align:middle" emoid=":thumbsup:" border="0" alt="thumbs_up.gif" />

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May 26, 2011
1:42 pm
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oaken
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QUOTE (Matt @ May 25 2011, 08:51 AM) < {POST_SNAPBACK}>
That makes sense Krister, looking at Gabon's climate I'm guessing it breeds during the rainy season when water temperatures should be cooler. Thanks for the info. /thumbs_up.gif" style="vertical-align:middle" emoid=":thumbsup:" border="0" alt="thumbs_up.gif" />

I think these temperatures are valid for the dry season as well. Haven't found any data for Diapteron species regarding dry season temperatures but here's some data regarding Aphyosemion coeleste that also can be found in Gabon:

"Found in small forest rivers where the water flows slowly or forms swampy areas. A.coeleste have been caught under grassy overhangs at the waters edge. Water quality at the Mbinda location measured pH 6.5, DH 1, water temperature 18·9°C at 1000 hrs. Altitude 400 metres.
Other biotopes have been measured at pH 5. Water temperature has been observed as being between 18-19°C with a drop recorded at 17°C & a rise recorded at 21°C. These temperatures relate to dry season recordings (June - August). BKA kilinews 276, August 1988, Pürzl & Wachters."

http://www.aka.org/wak/Ref_Lib.....ry/Aphyose.../A.coeleste.htm

May 26, 2011
7:36 pm
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Senor Bastardo
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Well Gustaf that´s all true but other species can and do breed in higher temperatures. Like Aphyosemion ocellatum, ogoense and so forth. The difference between warmer and colder (among other things) is the oxygen level and I feel that you have to try just to see if it can be done as long as the fish doesn´t come to harm. The worst that can happen is that I have to rehome the fish.

Take Apistos for example, they´re generally supposed to be kept warm and a time tested way of getting them to breed is doing a partial water change with cooler water. What you´re doing (among other things) is saturating the water with oxygen. You have been to Janne and seen his setup for his Apistos and he keep them at 22-23 degrees and they breed like crazy and are really healthy. So even if it´s ideal to try to match the parameters under wich the fish live it can be done otherwise.

May 26, 2011
7:51 pm
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oaken
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QUOTE (Senor Bastardo @ May 26 2011, 09:19 PM) < {POST_SNAPBACK}>
Well Gustaf that´s all true but other species can and do breed in higher temperatures. Like Aphyosemion ocellatum, ogoense and so forth. The difference between warmer and colder (among other things) is the oxygen level and I feel that you have to try just to see if it can be done as long as the fish doesn´t come to harm. The worst that can happen is that I have to rehome the fish.

Take Apistos for example, they´re generally supposed to be kept warm and a time tested way of getting them to breed is doing a partial water change with cooler water. What you´re doing (among other things) is saturating the water with oxygen. You have been to Janne and seen his setup for his Apistos and he keep them at 22-23 degrees and they breed like crazy and are really healthy. So even if it´s ideal to try to match the parameters under wich the fish live it can be done otherwise.

Yeah but Janne doesn't really keep his cool water killies in high temperatures as far as I know. He also lost a huge amount of them last summer due to heat did he not? Oxygen level is of course important, but I think the real problem is that the eggs develop too fast in high temperatures. Saying that I don't have much personal experience of course /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> Just going by what I've read on the internet.

Also not blaming you for keeping them btw. It was more to prove a point that they do live in pretty cool water all year around.

May 26, 2011
9:42 pm
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Folköl
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Hi guys,

I wouldn´t think so much about the temperature.
A lot of people write that other Aphyosemion (ocellatum & co) are much
more sensitive to higher temperatures than Diapterons.

I keep my fishes since three years now and lost one fish
so far (not caused by temperature problems). I lived in a southsided
room on the 4th floor and they all survived the summer.

As long as you don´t live in a super hot country or under the
roof with longtime temperatures over 26° C I don´t see a problem except
the reproduction.
Mainly people lost their Diapterons by high temperature cause they were
more aggressive and chasing eachother till they were totally exhausted
and died caused by that.
It also depends which Diapteron you have.
I heard that D. fulgens for example are more aggressive than the other ones.

So you could seperate them or put them in another room(basement) for a short time if you
notice that they are really not doing well.

May 27, 2011
6:04 am
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Senor Bastardo
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QUOTE (oaken @ May 26 2011, 07:34 PM) < {POST_SNAPBACK}>
Yeah but Janne doesn't really keep his cool water killies in high temperatures as far as I know. He also lost a huge amount of them last summer due to heat did he not? Oxygen level is of course important, but I think the real problem is that the eggs develop too fast in high temperatures. Saying that I don't have much personal experience of course /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> Just going by what I've read on the internet.

Also not blaming you for keeping them btw. It was more to prove a point that they do live in pretty cool water all year around.

I didn´t think you where blaming me either, sorry if I came of grumpy but since being a grumpy old man that´s my natural way of speaking and writing /wink.gif" style="vertical-align:middle" emoid=";)" border="0" alt="wink.gif" />

He did loose a lot of his lower temperature killies during this summer but, according to him, it was partly because he didn´t have the time to use oxydators wich he haf done previously.

May 27, 2011
6:09 am
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Senor Bastardo
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QUOTE (Folköl @ May 26 2011, 09:25 PM) < {POST_SNAPBACK}>
Hi guys,

I wouldn´t think so much about the temperature.
A lot of people write that other Aphyosemion (ocellatum & co) are much
more sensitive to higher temperatures than Diapterons.

I keep my fishes since three years now and lost one fish
so far (not caused by temperature problems). I lived in a southsided
room on the 4th floor and they all survived the summer.

As long as you don´t live in a super hot country or under the
roof with longtime temperatures over 26° C I don´t see a problem except
the reproduction.
Mainly people lost their Diapterons by high temperature cause they were
more aggressive and chasing eachother till they were totally exhausted
and died caused by that.
It also depends which Diapteron you have.
I heard that D. fulgens for example are more aggressive than the other ones.

So you could seperate them or put them in another room(basement) for a short time if you
notice that they are really not doing well.

´

I´ll keep an extra eye on them for any signs of aggression. My apartment is pretty much the same temperature all year round, about 24 degrees except during the worst parts of summer. I gather from your chosen nickname that you live in the very same country as me and oaken. A very Swedish dominated thread this turned out to be!

May 27, 2011
4:11 pm
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Folköl
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QUOTE (Senor Bastardo @ May 27 2011, 05:52 AM) < {POST_SNAPBACK}>
´
I gather from your chosen nickname that you live in the very same country as me and oaken. A very Swedish dominated thread this turned out to be!

Actually we could be neighbours without knowing it. I live in Stockholm since 4,5 month.
Originally from Germany, I moved via the Netherlands to Sweden with the Diapterons to not have to much off topic.

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