Corydoras - some extra vids

This isn't about specific species, more like few general observations that may come handy for anyone who wants to try and breed some corys.

Probably the easiest ones would be species being in the hobby for long time (tank bred for many generations). C. paleatus(peppered),C. aeneus(bronze, albino - yes that's the same species),C. schultzei(black) but C. sterbai, C. trilineatus or C. panda wouldn't be to difficult as well.

Corys spawn readily in community tanks but usually all of the eggs perish to the predation or simply doesn't hatch because water is far from being good enough. In large heavily planted tanks with small amount of fish there is chance for few fry to survive.

So what you need is separate tank with air driven mature sponge filter. In many cases 30-40l tank is enough. Water should be soft and slightly acidic, pH 6.5, spawning mop or bunch of underwater moss of any kind.

Usually smallest breeding group should consist 1 female and 2-3 males but this differs with species.

Common technique to initialize spawning is to do large (40-50%) water change for fresh soft and few degrees cooler water. Some of the species will spawn releasing all available eggs and some will be depositing eggs over few days period. Some will deposit eggs in the moss and plants while others will just stick the eggs to the aquarium walls. The fish should be removed from the breeding tank as they usually eat the eggs.

Fry hatches after around 48h but that differs between species as well. After absorbing yolk sack after few days they start to look for food. Micro worms and newly hatched artemia works very well. After around 1 week powdered flake food and finely chopped frozen food can be fed. Growth rate is impressive for first 3-4 weeks.

So that's it and good luck

sterbai fry 1 week old


sterbai fry 4 weeks old


aenus (albino) fry 1 week old

Hi Bart,
Thanks very much for the info, Im getting some young Pandas in the next couple of days and in the future hopefully will try to breed them, and your info helped a lot, again, Thanks,

Stephen M.

Great Intro to the breeding of corries and well worth a post. It's nearly at a point where bart needs a section of his own for all his tutorials .... keep them coming because I always find them very interesting and detailed.

Yes agree Davey_c, Great Info, and I'm hoping to Breed some Cory's some day

Stephen M.

thanks for posting this bart, interesting read.

Hi thank you for posting, very interesting read.

Can you tell me what is the largest size Cory you can get ? Would like to put a shoal in my tank but have a few big Geophagus and Uaru and wasn't sure if the little cory's would mix.

Mike

Seahorse have a large variety in stock that must be 2" at least, I can't remember their name but from what I remember from a previous thead on another forum they were quite a find at the time with the added bonus of being wild caught

Not strictly a Cory but Brochis splendens might be an option?

Andreas

very interesting. had a breeding pair of bro
nze corys.hatched just as i came home from work. made the mistake of not removing parents. only 1 survived. lesson learned. Denis

I'm glad that this is help to anyone.
Check PlanetCatfish site for detailed info about particular species. It's great database.

www.planetcatfish.com/

Thanks Davey c, Andreas, the Bronchis splendens looks stunning.
Edit to add planet catfish gives it a great write up ! Wanna get a bunch of these fellas.

Some additional stuff which might interest some people

Corydoras spawning. You can see exactly how it happens.


That's how they hatch.


Larvae just after hatching.



And some microscope footage of larvae. Blood rushing through the body can be seen. Also tiny hart.






The little fellow from under the microscope was not harmed! He went back to the tank and to my knowledge is sound.

great catalog of videos cheers

Excellent series, never seen a cory through the microscope before.

You must have some patience Bart, catching these moments in a fish's life.

Andreas

A seperate breeding tank sure makes all the difference.

Wow
Amazing Videos Bart
Great Thread
Thanks for sharing



Des

Nice videos bart specially the one with the microscope.

Mike53 wrote:

Hi thank you for posting, very interesting read.

Can you tell me what is the largest size Cory you can get ? Would like to put a shoal in my tank but have a few big Geophagus and Uaru and wasn't sure if the little cory's would mix.

Mike

Be VERY careful what size Corydoras or other Catfish you put into your Tank with larger Fish, when a larger Fish attempts to eat a Catfish both usually end up dying, the barbs on the CF will lock out and stick in the throat of the bigger Fish resulting in both dying.

Just a heads up.

H.