Corydoras aeneus or not?

Judazzz · Post by **Judazzz** » 18 Sep 2006, 08:47

Hey all,

Last friday I bought 6 Cory's to liven up my 25g tank a little, but I'm not really sure about their identity. They were labelled Corydoras aeneus at the store (price: 2 bucks a piece), but they don't really look like the Bronze Cory's I had before. These new fish seem to be a bit darker in body/fin coloration, and also have a nice orangy stripe running over the upper body.

Any Cory-cracks out here that can tell me what I've bought?
Thanks in advance

martijn · Post by **martijn** » 18 Sep 2006, 11:09

Hi Judazzz,

I think it is Corydoras sp. cf. aeneus(orange-stripe)

You can find it in the cat-e-log here:
http://www.planetcatfish.com/catelog/sp ... ies_id=265

Bye Martijn

Judazzz · Post by **Judazzz** » 18 Sep 2006, 11:26

Hey Martijn, thanks for your input!

That's what I more or less thought (or actually, hoped for), but I don't know enough about Cory's to be able convince myself when in doubt... ;)

kim m · Post by **kim m** » 18 Sep 2006, 11:55

It's not orange stripe...I'm more in favour of the variety called Corydoras "Schultzei", wich, at the moment, is regarded as a colourform of C. aeneus although it could very well be a species of it's own.

Coryologist · Post by **Coryologist** » 18 Sep 2006, 13:57

Hi. Around these parts they are referred to as, "Peru Gold Shoulders." - Frank

ZachPaul · Post by **ZachPaul** » 18 Sep 2006, 15:16

ive got 2 of those, my lfs called them 'bronze' idunno. im not all tech. about it.

Post by **Coryman** » 18 Sep 2006, 20:22

Here in the UK they are known as Corydoras aeneus schultzii. The species Corydoras schultzii was described by Holly in 1940, but the type material was lost in WW2. because of the lack of type material Nijssen & IsbrÃ¼cker, 1980b designated it as a synonym of Corydoras aeneus.

I am sure when science gets to grips withCorydoras aeneus and its many variants this one will emerge as its original self. There are several other 'Aeneus' synonyms, which will hopefully be sorted out at the same time.

Ian

martijn · Post by **martijn** » 18 Sep 2006, 22:21

Can somebody post a picture of the Corydoras Schultzii, so i can compare it with the pictures of Judazzz.

I can't find it in the cat-elog.

To Ian: You say that Cory on the pictures posted by Judazzz are known in the UK as Corydoras aeneus schultzii. Does that mean that schultzii stands for the orange striping?

Bye Martijn

Post by **Coryman** » 18 Sep 2006, 23:22

These must not be confused with the slimmer species Gold/Orange laser, which have the olive coloured finnage. C. aeneus (schultzii) has an arched golden stripe, which can vary in both length and intensity.

Ian

Judazzz · Post by **Judazzz** » 02 Oct 2006, 16:09

Thanks for your feedback, guys!

The fish have noticably changed in appearance (coloration, eye color) now that they have gotten more comfortable in their tank, so I figured it would be a good idea to post some additional pictures.

Do you guys still have the same opinion after seeing these pics (please forgive my nagging - I'm pretty new to the wonderful world of Cory's)?

Thanks again!

Coryologist · Post by **Coryologist** » 02 Oct 2006, 16:18

Judazzz wrote:Do you guys still have the same opinion after seeing these pics (please forgive my nagging - I'm pretty new to the wonderful world of Cory's)? - Quote edited by Guppyman.

Hi. Still believe they are what are called Peru Gold Shoulder, around here.

Ian, please give us the correct way to list this fish so I can change the text on my image. I'm very confused.

kim m · Post by **kim m** » 02 Oct 2006, 16:50

Aren't they C. "schultzei"?

Coryologist · Post by **Coryologist** » 02 Oct 2006, 16:55

kim m wrote:Aren't they C. "schultzei"?

Hi, Kim. That's what I'm trying to get a final read on. Is my fish the same as Judazzz's and is my fish C. shultzei?

kim m · Post by **kim m** » 02 Oct 2006, 17:55

At least they have more "gold" on them than common "aeneus" we see in Denmark.

I would say the are C. schultzei if only looking at the colours. Can't remember where C. schultzei are supposed to live compares to your (Franks) fish that is from Peru judging from the title.

Barracuda518 · Post by **Barracuda518** » 03 Oct 2006, 14:46

I am also wanting to know this. I have some of the same fish Frank has in his picture and I also have another one that looks very similiar to these, except the stripe is more of a spot then a stripe

Mike_Noren · Post by **Mike_Noren** » 20 Feb 2007, 23:53

I'm resurrecting this thread because I too have some of these fish, looking exactly like the ones in the first message:
http://mikes-machine.mine.nu/temp/idify ... C_3794.jpg

Compared to the "gold shoulder" (and to other similar variants, like the "orange banded" aeneus) these fish have:
* much shorter distance between dorsal fin and adipose fin.
* much shorter distance distance between adipose and caudal.

(both of the above points - which are quite visible in all the photos - basically means it's a 'stouter' fish than the normal slender aeneus shape)

* in all other aeneus-types the light band under the dorsal fin ends before the caudal, but in these the band continues all the way to the peduncle (base of tail fin).
* the dark lateral band continues out into the medium caudal, which it doesn't do in any other aeneus-types.

That said, I've no idea where my fish come from. For all I know they might be "Corydoras schultzei", or simply czech hybrids.

Post by **Coryman** » 21 Feb 2007, 12:30

Your picture shows the fish which was described in 1940 by Holly as Corydoras schultzei, but most of Holly's material was lost during WWII and because of this is is impossible to be 100% sure of its identity. In 1980 Nijssen & Isbruecker placed it in synonymy with C. aeneus and for many years it has been called C. aeneus schultzei. My belief is that it is a distinct species in its own right and should be recognised as such.

C. schultzei comes from the the upper Amazon basin and a black specimen formed the basis of the original "Black Cory" which was produced in Germany about ten years ago.

Ian

Mike_Noren · Post by **Mike_Noren** » 21 Feb 2007, 13:17

*Bows*

Thank you; Corydoras schultzei it is!

mokofeyz · Post by **mokofeyz** » 21 Feb 2007, 20:50

What do you guys think about this? They don't look like my regular aeneus either.

Mike_Noren · Post by **Mike_Noren** » 26 Feb 2007, 21:11

To me that looks like two more schultzei.

Corydoras aeneus or not?

Corydoras aeneus or not?

I.D.

name

C. schultzei