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The process began about an hour ago and is continuing as we speak. I held off last week's fifty percent WC, then did a 70 percent this afternoon after noticing cleaning action last night. The temperature in the tank is about 70, maybe less. Java moss and a spare hypancistrus breeding cave, bare substrate with 2 airstone driven filters. Spawning occurs in typical "T" style formation. Eggs laid in java moss. Two males, two females involved.

Pics. Red circles indicate signature pelvic pouch. I was unable to get pictures of the T position, as I snuck in, took two shots, snuck out, etc.:

http://img.photobucket.com/albums/v398/Kleevage/breed2.jpg

http://img.photobucket.com/albums/v398/Kleevage/breed.jpg

Very nice. What are your plans for the fry, once they hatch and grow out?

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And when he gets to Heaven, to Saint Peter he will tell: "One more Marine reporting, Sir! I've served my time in Hell."

Keep them home, I suppose, considering that I'll probably ed up out of room, I could probably give a few away to those willing around here. Of course, I also assume that the hardness of the water here is going to be a bit overwhleming for the eggs, seen here:

http://img.photobucket.com/albums/v398/Kleevage/egg.jpg

which are not actually infertile--YET.

Wow, congrats!

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The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian.

Way to go! You got your weitzmani to spawn!

Nice pics too.

Once they've spawned, you should find that the survival rate of future batches of eggs in future spawns increases with time as they accustom themselves to your water.

Time to fire up an infusoria culture and buy some Liquifry!

Post pics of any successfully hatching babies as and when they arrive - it'll be nice to have some competition for my Pandas at last!


Panda Catfish fan and keeper/breeder since Christmas 2002

Congratulations for the spawning & hope you'll have lots of fry & you can post some pictures.

http://www.flickr.com/photos/corydoras/
Member of the Malta Aquarist Society - 1970.
http://www.maltaaquarist.com

Alas, all the eggs that I ended up finding were, indeed, infertile; about 40 or so of them amongst two females--pretty large, too. Hopefully, this will either improve with experience or RO addition. On the plus side, the L-66 are in the cave spawning again after a month's hiatus from tank rearranging.

Yeah, you should have better luck with repeated spawnings. If they're new to the game then hatch rates tend to be lower. It's supposed to be the males' fault, those poor guys- at least they tried, right?

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And when he gets to Heaven, to Saint Peter he will tell: "One more Marine reporting, Sir! I've served my time in Hell."

Way to go on triggering the spawn! Sorry to hear it was infertile. But it's a good start! Congrats!

Way to go yourself (QA's) . Have fun with those fry.

congrats on the spawn.. but i don't think you will have to alter your water by using RO.. my water where i live is very hard and i have spawned and rasied many species of corys so far without any problems.

you also have to remmeber that if this is the first spawn by them that the fertility rate will be low.. as it always is.. and the more they spawn the fertility rate will increase as they get the hang of things.

so be patient.. save the time of altering the water and enjoy them until they spawn again.

It is odd though; none of the corydoras that I've spawned thus far have had a 100 per cent infertility rate, among them, aeneus albino, peru goldline and regular, panda, sterbai, and even the adolfois were fairly consistent.

i am up to 9 species of corydoras spawned (c. similis, c. aeneus, c. panda, c. caudimaculatus, c. metae, C112, c. axelrodi, c. pygmaeus & c. habrosus).. and it just varies from fish to fish.. when i spawned one of them (C112) the fertility rate was zero the first spawn.. second spawn i got 3 fry from around 60 eggs.. third spawn i got 12 fry.. fourth spawn i got 20+ fry and now they are spitting out eggs (not litteraly) every two weeks with the fertility rate of around 75-85%.. just as an example for you.

just give them a few more spawns before you go messing around with the water.. i don't think that will make much of a difference.. our ph coming right from the tap is around 8.0... in the tank around 7.8. and have never touched the water to make it softer and have raised hundreds of cory fry without any problems.

just my 2 cents.. might save you alot of work if you just wait. it's not like they will all the sudden stop spawning and never do it again. once they start it is often hard to stop them

Well, Scleromystax, to the extent of my knowledge, are fairly TDS (or rather, the softness associated with it) dependant, perhaps not so much in regards to infertility, but at the very least relative to hatching, so getting fertile eggs from the group in such water conditions does make me a bit more hopeful.

Also, indeed, once they begin spawning, retriggering the cycle has never been an issue for me. It is the same basic principle with loricariids.

well i wish you the best of luck.. and please do keep us updated on future spawns. i really wish i had the oppertunity to get my hands on some of these corys myself.. i guess i will have to wait for people such as yourself to kick up the production lines if i ever want to get any. and since they seem to be along the same line as pandas as per spawning, i am sure it won't be too long before the market has adequate tank raised fry available.

any updates on these guys???

No (as is the norm, at least from what I've witnessed, it takes at least two weeks to condition a female into breeding colors after a spawn), but over the past week, it seems as if my C-35, after adding a few new fish) have finally spawned again, after a LOOONG hiatus (hell, the fry from the last spawn are almost an inch long now), but I can't be sure, as the planted ten is literally a jungle of xmas moss, and the orange lazer went at it, after working with them for over 5 months. It's been a good month in cory-ville. Pics to follow if I can find any remaining fry.

*orange lazers

congrats on the new spawns... hope we can see pics of them down the road.. and nice having those black phantoms going again too... i have the green lazers and still have had no luck with spawning them, but they are close as the females are getting pretty heavy.

on a side note.. my C112 spawned again today as well..