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Hi guys,

I am looking at this species and wondering...

Does this species have a variation in the form of an eye band across the eyes, very much like the markings of the corydoras atropersonatus?


Corydoras loretoensis


Corydoras atropersonatus

Both pictures are from Ian's site for this discussion and comparison.

I have seen a sample which has the body shape of loretoensis and bears the markings similar to atropersonatus.

Looking forward to hearing what you guys have to say..

Cheers,

Basically NO, not as far as I know.

Do you have something in m ind or a picture of a similar species that does have the eye mask.

Ian

Hi,

Does this species have a variation in the form of an eye band across the eyes, very much like the markings of the corydoras atropersonatus?

Like Ian i never saw any. Those are the ones i kept for a while. I had ~15 of them and none had a mask. I also never realized any with a mask at importers, lfs... . Some years ago (I was still in school ... ) the species was quite common here for a while.

Achim

Benny,

Done a bit more checking and C. kanei may be the closest to what you describe, but it does not have the extended dorsal fin.

Ian

Hi guys,

Appreciate the quick reply over this festive season.

I manage to get a few of this species and will try to get pictures to show you guys.

From what I can see, Corydoras kanei has the body shape somewhat similar to Corydoras atropersonatus. Corydorus loretoensis has a body shape more towards that of corydoras sp cf reynoldsi, corydoras breei, meaning that the head is short and stout.

Will try to update with a picture soon.

Happy holidays!

Cheers,

I just bought some A. pouciradiatus and i believe i recieved a cory in the batch that looks like the top pic but has a black mask and black splotch on the dorsal as well i m still looking through the cat-eLog to find something like but there are few that look simular

If you cannot find it in th Cat-eLog take a look on my site.

Ian

Thanks Ian

it looks to be one of the 3 c. kanei c. leucomelas or c.melanistius
its hard to tell as it is still a juv. about 1/2 to 3/4 "

Does it have virticle baring in the caudal fin.

Ian

This is C. kanei



This is C. leucomelas



And this is C. melanistius



You will note that C. melanistius does not have caudal baring.

Ian

the body spotting looks exactly like the C. kanei but it has a little more pronouced spotting with a stripe at the base of the caudal fin made up from spotting not a solid stripe more like a denser amount of spots making it look like a solid line but i m leaning towards C.kanei

Ok guys, got the pics.





Definitely does not look like a regular Corydoras loretoensis.

I have 8 of these, so it's not a singular variant of the loretoensis either. They all have the black band over the eyes.

It's not Corydoras sp. aff. armatus (C96) either as there's no black marking ending from the dosal into the body. Besides, C96 does not have the dotted marking on the body.


Corydoras sp. cf. armatus (C96)

Any further suggestions?

I'll try to get more pictures if it helps.

Cheers,

Hi Benny,

difficult question.
The upper fish clearly belongs to the "armatus group" (To which imo C. armatus, C. sp. "dorsalis", C96 and C. loretoensis belong), and may imo be a variety of C96. Young fish of C. sp. C96 have few markings on the body (additional pic see here), older ones develop more and more markings on the body like this one.
I have no clue about your second fish. However, as you already stated, its clearly not C. loretoensis.

Greetings,

Achim

I think the first pic's are nearer to C armatus than anything else and could possibly be juveniles of that species. Many juveniles of a species show a lot more pigment, especially around the head, than adults.

The other (C96) is probably close to C. griseus but as yet un-described.

Ian

Hi guys,

Thanks for the quick reply again.

Actually, all the 8 pieces are from the same batch and are mixed with corydoras loretoensis. So the first and second fish are from the same batch and probably same species.

Achim wrote: The upper fish clearly belongs to the "armatus group" (To which I.M.O. C. armatus, C. sp. "dorsalis", C96 and C. loretoensis belong), and may I.M.O. be a variety of C96. Young fish of C. sp. C96 have few markings on the body (additional pic see here), older ones develop more and more markings on the body like this one.
I have no clue about your second fish. However, as you already stated, its clearly not C. loretoensis.

I'm aware that the C96 will develop more distinctive markings as they mature. The first picture actually shows a juvenile fish with SL of about 2.5 cm. Here's one with an adult for comparison.



The purpose of looking at the C96 is to determine that they are not the same as the species in doubt above. However, they do share the same body shape and band across the eyes.

Coryman wrote:I think the first pic's are nearer to C armatus than anything else and could possibly be juveniles of that species. Many juveniles of a species show a lot more pigment, especially around the head, than adults.

These fishes are about 3 - 4 cm SL. So they should be juvenile since we do not know how large they will eventually grow up to. However, if they are anything like Corydoras loretoensis, then they are not going to get much bigger.

Here's another picture of a third fish from the same batch.



I'll have a look as some of the Japanese publications and see if I can dig up anything as well.

Really appreciate you guys taking the time to run through this for me. Thanks!

Cheers,