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Jstewart0925
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My wife got these Cory’s for me as a present for my planted 20 long but she said they only said corydoras on the tank they were in. I would like to get a few more could anybody help me identify them? I’m thinking maybe bronze corydoras not sure tho. Thanks Josh FF844468-BC7A-468E-ABC8-B1E31FB8261A.jpeg.822a92889f9059a5d370adc5a2c943a8.jpeg0287644C-07EA-42BF-BA3A-8C3F9F058678.jpeg.e173e64ca6262ee3ca347bc1d23a4dd2.jpeg47BB53AD-CA66-4A13-BAB8-A00DAE10B3EF.jpeg.a3b488184d9b09a950c6e44e81597f72.jpeg

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On 7/30/2022 at 1:14 PM, Jstewart0925 said:

My wife got these Cory’s for me as a present for my planted 20 long but she said they only said corydoras on the tank they were in. I would like to get a few more could anybody help me identify them? I’m thinking maybe bronze corydoras not sure tho. Thanks Josh FF844468-BC7A-468E-ABC8-B1E31FB8261A.jpeg.822a92889f9059a5d370adc5a2c943a8.jpeg0287644C-07EA-42BF-BA3A-8C3F9F058678.jpeg.e173e64ca6262ee3ca347bc1d23a4dd2.jpeg47BB53AD-CA66-4A13-BAB8-A00DAE10B3EF.jpeg.a3b488184d9b09a950c6e44e81597f72.jpeg

Yep those are bronze corydoras!

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I’m gonna go with the crowd here: bronze corys 

For a second I was wondering if they could be red sailfins, but the tail is black.

Sailfins (venezuelanus)  can be confused with Corydoras aeneus (bronze corydoras) and indeed C. venezuelanus is usually considered a junior synonym of that species. 
https://www.planetcatfish.com/common/species.php?species_id=716  Sailfin

https://www.planetcatfish.com/common/species.php?species_id=51  Bronze

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On 7/30/2022 at 4:19 PM, Ken Burke said:

For a second I was wondering if they could be red sailfins, but the tail is black.

Sailfins (venezuelanus)  can be confused with Corydoras aeneus (bronze corydoras) and indeed C. venezuelanus is usually considered a junior synonym of that species. 

Yeah, that's the issue for me too it doesn't look like either one.  The ones I have (black version of the bronze corys) Corydoras schultzei "Black".  <---- Second link in my signature as well as photos below.

So if there's a unique version of the bronze that's newer / different than the ones I have..... I'm confused and these have to be the insanely rare black version of the red sailfin venezualean's.

One of the big differences for me is how the red fins alter. On yours it's right below the dorsal is the biggest identifier for me. If that red splotch is there under the dorsal it looks like the venezuelean to me as opposed to the schultzei/aenus/bronze where it's less on the body and more on the top of the fish.

image.png.05f3e13f18067f707b6cfc293b17a6a3.png

From what I'm seeing now (ignore me being confused, it's been one of those days.

Ones I have: seen above, Corydoras Schultzei (Black version of Gold Flash Corys)
Ones @Ken Burke has are the Corydoras Venezualean (Black version of Red Sailfin Corys)
---> EDIT: Found a decent photo of the darkened form. could just be dark substrate too.
Corydoras(ln7) venezuelanus
Ones in the OP: "black variant" of Corydoras Aenas (Black version of Bronze Corys)
EDIT 2: These are from a listing of bronze corys, confirming the comments above by everyone, yay!
Mystery-Corydora-Small-6.jpg?v=1641569674


That right?

If someone has clear sentence for it, I'll add it to the quote below for my notes 😂

Quote

If you are having trouble distinguishing one from the other, here is a simple guide. Young C. schultzii "Black" tend to have all reddish fins which darken with maturity. C. venezuelanus look very similar to the young C. schultzii "Black". However both the normal C. venezuelanus we see in the hobby, and the dark form have reddish dorsal and adipose fins, but the caudal, anal and ventral fins are grey.

Clarification:

 

Quote

Corydoras schultzei is usually considered a synonym of Corydoras aeneus. However, there is a school of thought that holds the opinion that Corydoras aeneus should be restricted to the holotype form which is from the island of Trinidad and specifically is not as elongate as C. schultzi. Somewhere across the huge geographic range of "continental" Corydoras aeneus and amongst its several geographic variations, which are really quite different shapes and sizes, sees the species featured here. If for no other reason than to prevent captive hybridisation and indeed to help separate the other forms, the junior synonym is used here as a species in its own right.

 

Edited by nabokovfan87
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B750221D-2976-4404-9E2D-C7C471716D16.jpeg.86ecde13ef555a05009dfe9c324fe52a.jpeg

 

The trick here is to look at the red.  Schultzei have a black stripe with red on top and below the tail.  Sailfin have red across the base of the tail.  The bronze corys are black at the base of the tail. Well, that’s my opinion anyhow.  77C1BF02-6806-4B99-A10B-7AFE64106627.jpeg.d324bff11437bca4989a4b8f34c369a7.jpeg

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On 7/30/2022 at 9:18 PM, Ken Burke said:

All I know is schultzei run $30.  Little rich for me, especially since I don’t have room for another corydoras colony 

Whenever I get some, I'll let ya know.  I'd love to trade you some 🙂

big storm tonight so fingers crossed. It'll be a while though.

Edited by nabokovfan87
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  • 2 months later...
On 10/15/2022 at 11:48 AM, Jstewart0925 said:

Their good unfortunately I lost one about a month back 😞 no new photos works been crazy at the moment. But they are about to get a new big home when I move them to my planted 54 gallon lol. 

Very unfortunate.  It does happen.  😞

Glad to hear you're excited for their new home. Sounds awesome.

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