Identify three Corydoras species

[kiwidu21]

Hi,

I come to you again for an identification of Corydoras. I have three to identify but I think I have two distinct species. In order to facilitate identifications (and because they are quite shy and therefore difficult to take a picture of), I will put them one by one on this subject.

So we start with the first, having previously been identified as C. leucomelas (around 2018 I believe, it was a friend who posted the subject). But the corydoras is now about 5 years old and exceeds 6cm (against 4 cm for leucomelas on the PC sheet). It has, moreover, a form different from leucomelas.
Specimen that I think is a male but it's quite complicated to take a picture of his fins.









An idea for this ?

[Mexnotex]

Hello,
It looks to be C ambiacus, lineage 8. C leucomelas is lineage 9 and smaller size

Cheers,
M Ortiz

[kiwidu21]

It looks like it but the size doesn't match. I saw C. ambiacus giant on an online sales site, is it a variety or another species?

[kiwidu21]

Hello,

as I don't have more answers for the first one, I will post pictures of those I will buy (ambiacus giant) in order to be sure that they are of the same species.

Here is the second corydoras: about 4 cm but young (about 1 year). Ambiacus too?

[kiwidu21]

does anyone know about this one?

[bekateen]

I would say ambiacus, based on how the black from the dorsal extends onto the body.

Cheers, Eric

[kiwidu21]

Thanks.
So here is the last one. As he is very fearful and does not fall into the trap I set, I only have a medium quality video. I hope it will be clear enough for you to give me an idea of the species. It has a slightly yellow stain (not visible on the video) which is not very pronounced (not as much as the previous ones) in the same place as the ambiacus. He measures about 4 cm and is approximately 1 year old. I was thinking more of a leucomelas for this one.
https://youtu.be/pHd557-fcLc[/youtube]

[kiwidu21]

Luckily, I managed to catch it at the same time as my reticulatus. I separated the time of the identification so if other photos are needed, it is possible.

[bekateen]

I think that's

Corydoras leucomelas

, or a c/cw number of a similar species.

Cheers, Eric

[kiwidu21]

Thanks