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Albino Cory's Spawning
August 25, 2008
7:50 pm
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Richy
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April 13, 2008
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Hi, my cory's but actually in my friends tank.
I gave my freinds 2 a while back and they've done very well, over 2" now head to tail. Tonight I visited and they said, look, eggs on the glass and leaves. Had a good watch and noticed it was these, trouble is they're BOTH depositing eggs. Something has spurned them to both do that at the same time.
I've had a quick read via searchs on google and looked here but a little confused.

Some info states "female will deposit eggs then look for the male and nudge him to get sperm into the mouth then go fertilise the eggs"
On our knowlege database it say's they interlock pelvics to fertilise the eggs in a T shape, surely this would be a + shape?
Two different scenarios.
The ones in their tank look the same, fin shape and from above and I'm thinking of giving them my other 2 to add the group of albino's and adolphi's. One of mine looks the same shape etc but the other may have a slight pointier dorsal fin.
Anyone here got experience or know of breeding these, any other sexual things to ID m/f? They have the tanks running to use as a breeding tank if need be.
I could keep trawling the net but rather ask here /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> Cheers in advance /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

August 25, 2008
8:17 pm
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Matt
Málaga, Spain
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Richy were you reading the Cory aeneus profile? It's one of the really old unedited ones. Most of the other cory profiles have been sorted to some extent so please try one of those instead. Sorry about that. /blush.gif" style="vertical-align:middle" emoid=":blush:" border="0" alt="blush.gif" /> A spawning cory pair don't interlock pelvics. Rather the male forms the top of the "T" and grasps the female's barbels/mouthparts between his pectorals and body. Here's a pic off Planet Catfish:

[Image Can Not Be Found]

Best way to sex them is to look from above mate. It should be really obvious if they're adult fish. The males should be noticeably slimmer and are usually smaller in size and have thicker pectoral spines than the females. I wouldn't use fin shape as a means of sexing in these domesticated fish. Also I've had female corys lay eggs without males being present before. Cold water changes and imo changes in atmospheric pressure can stimulate them to do it.

Attached files

[Image Can Not Be Found]

Cake or death?
August 25, 2008
9:07 pm
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mickthefish
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hi Richy , Matts right on the breeding precedure i've got a pic of habrosus in a lock if i can find the pic i'll put it up to show you what is meant for the T position.
it is known that females will get rid of their roe without a male being present bud.

mick

August 25, 2008
9:17 pm
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Richy
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cheers Matt, yes it was the Cory aeneus profile /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> I wasn't sure which was right or wrong or either but I know you're doing lots of editing etc, not a problem mate /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />
These are ina 5ft tank and it's being upgraded to a 8ft and alot of stuff has been moved out so wasn't sure it was the disturbance of it all that triggered them off. Weather, well we've haad alot of atmospheric changes lately so it may have been that. Water changes haven't changed so possibly rule that out, maybe.
Anyway, hope i have a male for them but it may be hard to know as they, kind of powerfeed (not overfeed) their fish and the albino's are about 1/2 bigger than the ones left in my tank, all from the same batch.
Mine get well fed aswell so hard to say if they just fat or females. I think i'll try and catch them and pass them over anyway, they good freinds of mine so I don't mind /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />
When they were getting the 8ft built I said, it's so kind of you to build a new tank for Bumripple /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> , you should of heard the bad language I got back from them /cool.gif" style="vertical-align:middle" emoid="B)" border="0" alt="cool.gif" /> /laugh.gif" style="vertical-align:middle" emoid="Laugh" border="0" alt="laugh.gif" />

August 25, 2008
9:20 pm
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mickthefish
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better still mate, i've found a vid of the embrace, egg in pectoral pouch and eggs on the sides of the tank.
here you go.

http://s76.photobucket.com/alb.....s/j25/mick...nt=MOV09824.flv

mick

August 25, 2008
9:20 pm
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Richy
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Cheers Mick, crossed posts. Yes I thought the fem's would just deposit first anyway without a male present but didn't think they'll survive. Hope fully I have a male to pass to them for the future /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />
A pic would be great if you can find it mate but don't put yourself out /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />
Cheers /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

August 25, 2008
9:25 pm
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Richy
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fantastic vid Mick, we cross posted again lol
Thanks very much /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" /> much appreciated /thumbs_up.gif" style="vertical-align:middle" emoid=":thumbsup:" border="0" alt="thumbs_up.gif" />

August 25, 2008
9:49 pm
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mickthefish
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i'm glad it helps mate, there are certain species of corys the do't do the T position the commonest being elegans where the female lays and the male covers the eggs.
but the vast majority do the T.

mick

August 25, 2008
9:56 pm
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Matt
Málaga, Spain
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Nice video Mick, you can see the eggs really clearly. /cool.gif" style="vertical-align:middle" emoid="B)" border="0" alt="cool.gif" /> Good luck with getting a male Richy!

Cake or death?
August 25, 2008
11:52 pm
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Richy
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thanks Matt n Mick /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />
I'll try and catch my albino's and pass on to my freinds whether m/f but I'm sure they'll be reunited with open fins anyway /biggrin.gif" style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" /> I'll still see my little pink porkers every other day anyway /cool.gif" style="vertical-align:middle" emoid="B)" border="0" alt="cool.gif" /> Even though nothing will come of the eggs which have been laid this time it was very fascinating watching them scoot about and laying them /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

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