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Hello,

I would like to reproduce corydoras C 102...

Have you experiences?

I have a 15 gallon empty.

I specify that I have never breed corydoras

Where did your Corys come from? How long have you had C102?

hello,

My corydoras is origin Germany

I have them for approximately 1 year

Maybe someone can correct me if I'm wrong, but C102 looks like a C.leopardus variant - from what I've heard very difficult to spawn. I've searched all my usual sources and can't find any records of C102 spawning in captivity, that's not to say it hasn't been done.
In my opinion if you've never spawned a Cory before I would use that empty 15 gallon tank to start with an easier species first. I have found Corydoras paleatus, Corydoras aeneus and Corydoras pygmaeus all very easy to spawn. With those types as long as the fish are mature adults, you have both sexes, healthy and you feed them right you should see eggs in time, especially if they are the only fish in the tank. If you need help or advice just ask here on the forum and I'm sure you'll get lots of response!
The good news is most Corys have pretty long life spans so it'll give you time to "practice" with a few other types before trying those C102's.
Good Luck!

Rob

Hello,

It's true, I normally have to begin with the easy sorts(species)...

But I have never liked aeneus, paleatus and pygmaeus...

In my tank, I have some characids ,I think not observe eggs..

That is why I would like to proceed in a smaller tank to try to reproduce them

So with which parameters is necessary it to proceed?

- 1: little food
- 2: fall with the water level
- 3: rise of the water by imitating the rain with cold water
- 4: well feed the breeders

Said me if it's good?

The only Leopardus type cory I've seen any breeding reports on has been C131. The breeder tried the usual methods to stimulate the fish to breed but they didn't work. I may not be 100% correct on this, and maybe Coryman or someone else could state it more clearly but I will try to describe what he did to induce them to lay eggs. He said he was keeping them in soft water (PH = 5) that was warm, 29 deg C(84 deg F). He then added clay minerals(I'm translating from German here, so I'm not sure if that's exactly right) to the water to bring the PH up to over 6. This also had the effect of clouding up the water for a few days. When the water became clear again he said he brought the PH back down to 4-5 (I'm assuming with a water change using some form of soft water) and added humin(I have no idea what this is). Only then did they lay eggs.
So as you can see, the Leopardus type corys like your C102's most likely require some very complex stimulations to coax them to breed. If aeneus, paleatus, and pygmaeus are not fish you want to work with, and you would like something a little more challenging why not try C. panda, C.sterbai or one of the Bandit types -C. metae, C.melini, or C. davidsandsi. I have found they are more challenging than the others I've mentioned and may be more attractive to you. If those don't appeal to you maybe let me know some of the kinds you do like and perhaps I can make a suggestion.

Cheers,

Rob

Hello,

Thank you for your answer!

It is very detailed as explanation,

To lower the hardness of the water, I would take fruits of aulne, a very common tree in my region

https://www.google.com/search?q=aulne&r ... B500%3B375

That's really interesting! I've used alder tree cones, Beech tree, Oak tree, and Indian Almond Tree leaves before, but I've never even heard of the Fruits of the Aulne. Is Aulne a kind of tree?

"Aulne" is a general name for alders, so I would guess that by their fruit he means alder cones. I only started up my aquarium about a year ago and sent off to Poland for black alder cones before I found out that the red alder trees around here serve the same purpose. Does anyone know if that is true of the other varieties of alder?

Hello,

I prepared the aquarium, filled half with water in 19°C,

The ground of the aquarium is naked,

put oak-leaves,coconut and ferns of Java

I also added a small pump to imitate the rainwater...

wait and see..

Best of Luck! I have a group of C. leopardus myself, so given their similarities, I'm looking forward to your results!

Cheers,

Rob

Definitely looking forward to the results!

Hello,

I made the changes of cold water for 40 %,

The température 19°C, pH 6.4 during 10 days, little food

There I put the heating adjusted 25°C

One of the females gets fat very slightly.

But I think that it is not sufficient...
Have to I it match 1 month?

Hello,

I made a change of cold water when there are thunderstorms,

They are very nervous..

Hi all,

...before I found out that the red alder trees around here serve the same purpose. Does anyone know if that is true of the other varieties of alder?

I've cones of tried Alnus glutinosa, incana, viridis & cordata, and they all seem to have the same properties. Add in your Alnus rubra and my suspicion would be that the other species would be both similar and suitable.

I'm using mainly A. cordata (Italian Alder) at the moment, it has 3 advantages for me, it is widely planted in towns, super-market car parks etc in the UK (making the trees accessible without getting wet feet), it stays in green leaf until December (making the trees easy to spot) and it has really big cones, making them easier to collect.

cheers Darrel

Hello,

I notice that they are always active, in the morning early and in the evening

Here is a female with the slightly pink belly

Does the "pink belly" mean gravid- full of eggs? I've noticed with my Long nosed Corys they don't "fatten up" like my female short nose corys do when they are ready to spawn, but then again, I've never gotten any eggs out of the long noses either! ;)

Hi all,
Why don't you have a thin layer of sand? I'm not an expert with any sort of Corydoras, let alone C102, but I wouldn't keep any of them without a sand substrate.

cheers Darrel

Hello,

I do not know for the belly pink, but it is the only one 3 corydoras..She is more large and fat than others.
I dont know if she make lot of eggs, but I have no experiments with this corydoras

I put of sand for reason hygiene,if it is better with the sand, I shall put it

With any Cory species sand is a must, and for straight snouted species like C102 and C. leopardus I would have it at least 3/4" deep. Although neither of these species have been recorded as being bred in aquaria there is a possibility that they spawn at night and may even deposit their eggs in the substrate.

A sand substrate is what the have in nature so I would provide as near natural conditions as possible.

Ian

hello,

Thank you for your answer,

How much thickness of sand have to I put?