Corydoras decker

[Chrysichthys]

My LFS got in some corys under this name, but the species doesn't seem to exist. They seem to be C. axelrodi. So two questions:

Has anyone heard of anything called Corydoras decker or a similar name, or anything linking it to axelrodi?

Is there any cory which could be easily mistaken for axelrodi by an amateur such as I? I want to be sure of my identification.

[Silurus]

There is a <i>Corydoras</i> "deckeri" (see pic below), which seems to be a trade name for C03(?).

[Chrysichthys]

Thanks, that solves it. I still think they're axelrodi, because they have a solid horizontal stripe, not a broken one. But deckeri is what they were confused with.

The trouble is I don't have access to the Cory Aqualog. (Although if it's a trade name they might not be in that either). Anyway, I bought some of them.

[Coryman]

Chrysichthys,

Have a look at my page, there are over 250 Cory species to be seen.

Ian

[Caol_ila]

Hi!

I bought 2 C.axelrodi today but when i arrived at home i realized that one of them looks way off. It has the same markings as the "normal" axelrodi but above the side stripe it features spots. The line isnt broken as in sp."deckeri" and no black markings in the dorsal fin.
I checked elog and ians site but found nothing similar...any ideas?

[Yann]

Hi!

Isn't C. "deckeri" believe to be an Hybridation between C. axelrodi and another species!!??? Which is one reason why this fish is still undescribed???!!
Cheers
Yann

[Achim]

Hi Yann, hi all,

Isn't C. "deckeri" believe to be an Hybridation between C. axelrodi and another species!!??? Which is one reason why this fish is still undescribed???!!

Well, C3, if you refer to it as C. "deckeri", has been bred for several generations. So at least in a biological species concept it is no hybrid but a valid species.

Greeting... Achim

[Caol_ila]

hiho...i just read in shanes world that the axelrodi can come in many marking variants...also with spots...

[cartouche]

Do you have any information about C3-deckeri? I bought them last year, they have already grown up and the females are quite plump. Don't you know if this species was bred in captivity?

[CoryWally]

http://www.planetcatfish.com/forum/albu ... pic_id=407
I picked up these earlier in the year which I would suggest are axelrodi, although I have since seen them advertised for sale as deckeri - nothing like C3. I suspect deckeri is a common trade name covering anything between axelrodi/loxozonus.

Mine are breeding on a regular basis and I'm raising good numbers (by my standards) of fry. The adults do not appear to reach the same size as 'true' axelrodi.

Mark.

[cartouche]

Hi, Mark, I would say that you have "a Surinamese" axelrodi, Corydoras sp. aff. bifasciatus. Deckeri really look very differently, and they also have nothing in common with loxozonus. They are rather some local mixture of species similar to Corydoras osteocarus with some banded-cory.

Corydoras osteocarus



Corydoras deckeri



The body pattern is clearly very similar, except the band over the eye. These two fish live in the same area of Rio Meta/Rio Orinoco.

Loxozonus looks like a mixture of melini with schwartzi. The band on the upper part of the body has exactly the same direction like in C. melini. Note also the vertical line on the dorsal fin (some contribution of surinamensis/parallelus/melanistius-like types. The body form and pattern is absolutely different both from deckeri and axelrodi. Thus I don't understand, why these species are always confused.

Corydoras loxozonus



Corydoras melini

[cartouche]

Hi, I spawned Corydoras deckeri today! An interesting thing: Two males of Corydoras axelrodi B that I have in the same tank joined them like if they belonged to the same species! Hopefully I will have some nice crossbreeds from it

Although I have never heard about successful spawning of this species and it occured after a dramatic change of water parameters, I don't exclude that it may be a Corydoras fairly easy to breed, like axelrodi. In any case, I was lucky to buy little fish. Unfortunately, I still see no response in the imported greybeards (greybarbels) that my attempts were aimed at.

[kim m]

Hopefully I will have some nice crossbreeds from it

...hopefully this is a joke? After the "hormone"-tread i think you should choose your words with care, or you'll end up in crossfire again I'm afraid.

[cartouche]

My God! What did I wrong again??? Many of the nice Corydoras that you get from the jungle are just crossbreeds of Corydoras species living in the same creek!!! The whole family Callichthyidae is mutually crossbred! That's why geneticists are so desperate, when they want to find relationships between Corydoras species! And you would burn me at the stake, because it happens in my tank? What about a new species CORYDORAS SP. CARTOUCHEI?

But you can be quiet, so far. I observed the spawning fish and the females of deckeri refuse the male of axelrodi, although they offer theirselves to them very actively. They are perhaps not enough attractive

[Jorge]

Hopefully I will have some nice crossbreeds from it

You are joking... aren't you?

crossbreeding produces hybrids and is never, never, never desirable

[kim m]

My God! What did I wrong again??? Many of the nice Corydoras that you get from the jungle are just crossbreeds of Corydoras species living in the same creek!!! The whole family Callichthyidae is mutually crossbred! That's why geneticists are so desperate, when they want to find relationships between Corydoras species! And you would burn me at the stake, because it happens in my tank? What about a new species CORYDORAS SP. CARTOUCHEI?

But you can be quiet, so far. I observed the spawning fish and the females of deckeri refuse the male of axelrodi, although they offer theirselves to them very actively. They are perhaps not enough attractive

Oh my god...

[cartouche]

You are joking... aren't you?

crossbreeding produces hybrids and is never, never, never desirable


So, Halle Berry is not desirable, too?

[Jorge]

So, Halle Berry is not desirable, too?

To me is very desirable... but this is because Halle Berry and I belong to the same species: Homo sapiens... I don't know what species you are to consider different from us

[cartouche]

To me it was surprising to find out that many similarly looking Corydoras have a different number of chromosomes, even those, who are considered the same species. For example, Corydoras "nattereri" was found to be actually three different species, depending on the place of origin. So you should in any case avoid breeding this species. Otherwise you could become a fish criminal without even knowing it.

Some of hybrids that come into being both in nature and in captivity may not be fertile, but many obviously are. For example, Corydoras nijsseni is a very nice example of a crossbreeding between elegans/duplicareus group. Or you can take Corydoras sp. "pereira", probably a local mixture of Corydoras parallelus with Corydoras duplicareus (the species live in the same region of upper Rio Negro). Or Corydoras gossei... do you recognize the body pattern of Corydoras sterbai in this species? And what about Corydoras robineae? Would you ban crossbreeding between Corydoras x Dianema? I think you would have to watch with a lamp near a bank of some creek in Brazil and when you saw them spawning together, you would have to seperate them immediately.

And there are tens of other examples! We should be thankful to nature that through this crossbreeding it created so beautiful species!

[kim m]

As Cheech and Chong would say : "Far out, man"... I guess that's the most polite comment I can give.

...what are the "grey beards" by the way?

[Jorge]

Or Corydoras gossei... do you recognize the body pattern of Corydoras sterbai in this species?

Absolutely no.

And what about Corydoras robineae? Would you ban crossbreeding between Corydoras x Dianema?

do you think they are a crossbreed between Corydoras and Dianema only because they have a lined pattern in the dorsal region? Why don't you think is a crossbreed of Corydoras x Hypancistrus? or Corydoras x Pseudopimelodus?

Coming back to your last question in the other post: do you think a crossbreed between you and a female Pan paniscus is desirable? suppossing you are a Homo sapiens, off course...

[cartouche]

Or Corydoras gossei... do you recognize the body pattern of Corydoras sterbai in this species?

Absolutely no.

Yes! Look even at the orange pectoral fin!

And what about Corydoras robineae? Would you ban crossbreeding between Corydoras x Dianema?

do you think they are a crossbreed between Corydoras and Dianema only because they have a lined pattern in the dorsal region? Why don't you think is a crossbreed of Corydoras x Hypancistrus? or Corydoras x Pseudopimelodus?

Coming back to your last question in the other post: do you think a crossbreed between you and a female Pan paniscus is desirable? suppossing you are a Homo sapiens, off course...

+



=



Maybe a naive idea, but who knows? Now we just know that "Brochis" is actually a Corydoras species closely related to the pantanalensis/sodalis/geryi/reticulatus group - which the body pattern in young Brochis indicates, after all.

And what about my origin, I didn't ask my mother, but I know that such a crossbreeding already happened in nature:

[Dave Rinaldo]

And what about my origin, I didn't ask my mother, but I know that such a crossbreeding already happened in nature:

If you're trying to be banned, that probably did it.

[Coryman]

cartouche

I am sure Chrysichthys question has been adequately answered and I am not going to get into another futile debate with you, what your true beliefs are I doubt that we will ever know, but your inflammatory arguments here will not be tolerated. If you want to debate your view with me further then do it by PM or e-mail, but sadly you will not have an audience.

ian