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Channa Bleheri Pics
October 13, 2008
5:29 pm
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mickthefish
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i've never kept snakeheads before but i had to get this little beaut, it's around 3 1/2 inches SL.
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mick

October 13, 2008
5:36 pm
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Malti
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very nice specimen...have yet to see a live one here

October 13, 2008
9:28 pm
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mickthefish
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one day Karlos and they'll turn up for you in the shops.

mick

October 13, 2008
10:05 pm
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dunc
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Those colours are amazing Mick, nice pickup!

What tank you keeping it in?

October 13, 2008
10:16 pm
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mickthefish
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at the mo dunc it's in a Qtank which is 15x12x10, but it will go into a 36 inch tank for when i get some more of them..

mick

October 14, 2008
9:43 am
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David Marshall
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Hey

Nice photographs Mick.

Bleheri are a great puzzle in that they spawn in caves, complete darkness, yet require more light in their aquarium, in order to feel comfortable, than any other snakehead known in the hobby. Can anyone explain why this is?

Regards David

October 14, 2008
9:58 am
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mickthefish
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an explanation for that question could be where they're caught Dave, alot of these places are in an open area so that would make the cave the ideal spawning place, and for the light level it could be they are night spawners.

mick

October 14, 2008
12:41 pm
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Matt
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Ha Mick welcome to the dark side! /ph34r.gif" style="vertical-align:middle" emoid=":ph34r:" border="0" alt="ph34r.gif" /> A couple of things about bleheri. The max size is about 6" not the 8" reported in some places. I guess 8" is a TL measurement. Also this cave spawning behaviour is news to me! As far as I know they spawn at the surface and the eggs float. They are "glued-together" by some kind of foam-like substance, a bit like a primitive bubble nest. I have seen pictorial evidence of this let me see if I can get permission to post the pics here.

Cake or death?
October 14, 2008
8:05 pm
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David Marshall
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Hey Matt

I wrote my post very quickly, as I am down with the flu bug, so let me explain in a broader sense.

Yes in the safety of aquaria a number of spawnings of Channa bleheri have taken place as you say above - and hope we can see the photographs. However there are reports of bleheri in aquaria which still go back to spawning in the dark.

In the wild spawning pairs of bleheri, depending upon surroundings, will make use of a cave environment, as this protects the fry/young from predation. To read more about this the references which spring to mind are:-

The piece at http://www.aquaticcommunity.co.....leheri.php (you may have to play around a little as this is from memory).

The article on Aquarticles website (www.aquarticles.com) on the Rainbow Snakehead by Kevin Webb and David Marshall (think we know this bloke).

Rainbow Snakeheads Issue 1 of Tropical World Magazine. Photographs by Kevin Webb and text by well you know the bloke.

Hey Mick

Think you are right. Kevin was probably the first U.K. Aquarist to get close to spawning these fish - which, from memory, come into condition on a monthly cycle.

Sadly my bleheri's never got to the spawning phase? Mick I think 'first refusal' to publish your account in The Aquarium Gazettte would be lovely.

I like SF because we can have a little fun without going over the top.

Regards David

October 15, 2008
3:20 am
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Matt
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Hey David sorry to hear you're under the weather mate. Is it "man flu" or the real thing? /tongue.gif" style="vertical-align:middle" emoid=":p" border="0" alt="tongue.gif" />

Before I continue I must say that this is a matter close to my heart as Channa are possibly my favourite genus of fish. I've kept 6 species, bred 2 (sp. "Assam" and gachua) and have read pretty much everything available in English (and some in German) on the genus. I should also say I haven't read the article in Tropical World though.

First off, the image on the Aquatic Community page shows a young male sp. "Assam" not a bleheri so that leads me to question the level of research that has gone into that article.

Also I believe there's no way these fish come into spawning condition on a monthly basis. In my opinion they are strictly seasonal spawners like many temperate species and given that bleheri occurs in a region very close to that of sp. "Assam" I'd guess that the species undergoes a period of relative dormancy during the coldest months of the year. The trigger for spawning should be a rise in both temperature and availablility of food coupled with a boom in the growth of submerged plants. When I bred the sp. "Assam" the fish were maintained in an unheated room and tank between Nov-April and when they finally spawned the daytime tank temperature was over 30°C due to a crazy bout of high pressure in July 2006.

I think that the male chooses a sheltered location from where he attempts to entice the female to spawn but the event itself occurs near the water surface. The fact that bleheri forms and maintains a "raft" of eggs is quite well-documented. Check out snakeheads.org for references on that including one from Vierke who described the species. The fact your friend observed floating eggs also supports this as the eggs are actually designed to float! Honestly having seen first-hand the behaviour of spawning pairs of Channa I just can't imagine them guarding a cave-full of young, especially as both adults and fry need to get to the water surface to breathe air!

As I said, a matter close to my heart! /laugh.gif" style="vertical-align:middle" emoid="Laugh" border="0" alt="laugh.gif" />

Cake or death?
October 15, 2008
10:25 am
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mickthefish
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wrong again David, innit bout time you got sommat right bud. /laugh.gif" style="vertical-align:middle" emoid="Laugh" border="0" alt="laugh.gif" />
thanks for some info Matt, i'm learning alot without even asking for it. /thumbs_up.gif" style="vertical-align:middle" emoid=":thumbsup:" border="0" alt="thumbs_up.gif" />

mick

October 15, 2008
11:06 am
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David Marshall
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Hey Mick

I know you are only joking, and take your post in a light manner, but you should have thought a little before the previous post as I do my research very thoroughly and, as you know, never post any information (or indeed write any article) that might mislead through written words.

Hey Matt

Unfortunately my flu is the 'real thing'.

I take your very interesting points and make no arguements. We are in a hobby with no set rules and in which different people observe different things and in which, hopefully, we 'pool' information to help others keep or breed a certain specie - as has happened in this thread. The information in my previous post should not be discounted and I hope that any SF members trying to breed bleheri will read all that we have said and then form their owm guidelines.

In the TW article I wrote more specific things about the differences in spawning between 'Assam' and bleheri than in the Aquarticles piece, which was done at an earlier date. When I am feeling better will find my copy.

Regards to all

David

October 15, 2008
11:37 am
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mickthefish
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Dave when have you ever seen me with a serious head on bud, over on petfrd there's a few good guys that are breeding channa's plus there's people like Matt who's bred them so if at any time i get stuck there's always someone to annoy.

mick
btw b*gg*r, they've started hybridizing barbs now. why can't they leave nature alone.

mick

October 15, 2008
11:50 am
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David Marshall
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Hey

Mick

Are you talking about the Red torpedo x Clown barb or those Rosy kind of hybrids you photographed in the past?

Anyway am back on, very quickly, having received an e-mail from 'a guest' to SF, who has read our last few posts, telling me that Channa pulchra as well as bleheri are known to spawn in caves. Anyone know much about pulchra?

Regards David

October 15, 2008
12:05 pm
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dunc
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QUOTE (David Marshall @ Oct 15 2008, 12:33 PM) < {POST_SNAPBACK}>
Anyway am back on, very quickly, having received an e-mail from 'a guest' to SF, who has read our last few posts, telling me that Channa pulchra as well as bleheri are known to spawn in caves. Anyone know much about pulchra?


Please share that e-mail with us David /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> There's little point saying something like that without qualifying the statement! /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

October 15, 2008
12:21 pm
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David Marshall
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Point taken dunc

Yes should have put it differently. As you will realise Aquarium Gazette e-mail address can be picked-up from a number of websites. Sender was not someone known to me, or in my address book etc. so will leave things at this point.

Regards David

October 15, 2008
12:31 pm
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Matt
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David you're right about pulchra for sure. I've read similar reports. My posts above referred only to the species we were discussing initially. Great discussion this. /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

Cake or death?
October 15, 2008
12:48 pm
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Matt
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It seems that pulchra were the first species of Channa to have been observed spawning in a cave though...so everyone's a winner! /laugh.gif" style="vertical-align:middle" emoid="Laugh" border="0" alt="laugh.gif" /> Presumably they bring the fry out once the labyrinth starts devloping or they'd be knackered...

Cake or death?
October 15, 2008
12:50 pm
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mickthefish
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here's a couple of pics of it now it's had decent food down it, i can understand how you feel about them Matt, they seem to have a lot of personallity about them for sure.
they have another Channa in at that shop but it's one of the beasts, you can tell when you look at his face ( come near me and i'll bite yer kind of face mate).
back to the discussion now.

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thanks
mick

October 15, 2008
12:59 pm
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Matt
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Mick the behaviour between bonded pairs is just wonderful to watch mate. They spend pretty much all their time together and actually caress each other with their fins and nasal appendages. It's difficult to describe until you see it.

Ps - that's such a clean specimen. Is it a tank-bred do you know?

Cake or death?
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