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 Corydoras "yellowcat"

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finzz
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PostSubject: Corydoras "yellowcat"   Sun Jan 22, 2017 10:49 pm

For the first time, after quite a few months of failure, the C123 "yellowcat" Corydoras spawned this morning. When the barometer went into free fall yesterday morning, I did a major water change with very cool rain water and the fish started to get really active. They've fooled me before, so I wasn't convinced until this morning when I found 70 or 80 eggs. I'm hoping that some hatch!

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PostSubject: Re: Corydoras "yellowcat"   Mon Jan 23, 2017 4:54 pm

Wow, what a beauty! It's reminds me of the "San Juan Cory" (napoensis ??) that were available in the 1980's, but they were more brassy-colored, not as yellow as this. I hope they make it!
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PostSubject: Re: Corydoras "yellowcat"   Mon Jan 23, 2017 8:36 pm

Thank you; I found some at an auction that were F1 and then later was able to get hold of some wild caught fish. I just couldn't help myself from buying them.

Yes, I had some "San Juan" Corydoras years ago: great fish! I found some (picture) about a year ago in a pet shop up in NY, but I'm not sure it's the same fish. These appear to be C. bilineatus or possibly C. napoensis.

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PostSubject: Re: Corydoras "yellowcat"   Tue Feb 07, 2017 11:24 am

Just checking in to see how your Cory 123 eggs turned out ...?
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PostSubject: Re: Corydoras "yellowcat"   Tue Feb 07, 2017 8:37 pm

Well; not many fry from the first spawn. Probably only a dozen or so hatched and as of now I can only find three or four fry. However, I had two larger spawns just three days apart.  The first set hatched out yesterday and it looks like there are many good eggs yet to hatch from the second one. The fry are very small.

I've never seen Corydoras place their eggs like these did on the last spawns: There were balls of eggs in all four corners of the tank the first time, and two of the corners on the second.
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PostSubject: Re: Corydoras "yellowcat"   Sun Feb 12, 2017 7:36 pm

A quick update: It looks like about half the eggs hatched. I'm not really sure as I don't want to move things around and disturb the young fish or possibly crush them. They get water changes four or five times a day at about a pint at a time to keep the water level from fluctuating too much and damaging their delicate air bladders. They don't look anything like the adults: more like tiny zebra-striped sharks. Picture is from today; fry are about a week old.

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PostSubject: photos not displaying   Sun Sep 24, 2017 8:23 am

@finzz For some reason your photos are not showing up. Is there any way you could repost? I missed this whole story the first time around, but would love to see any pics you may have!
Very Happy

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PostSubject: Re: Corydoras "yellowcat"   Sun Sep 24, 2017 9:14 am

Sure thing, Deb; Here are some pictures of the fish, adult male & female.

Don


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PostSubject: Re: Corydoras "yellowcat"   Sun Sep 24, 2017 1:43 pm

Those are nice! Nice long barbels and beautiful yellow fins. And the dorsal on that first fish is so tall. Is that typical? For both males and females?

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PostSubject: Re: Corydoras "yellowcat"   Sun Sep 24, 2017 2:18 pm

Hi, Deb;

Only the males get the high dorsals and then only when they're fully mature. The top lobe of the caudal fin tends to elongate on the males as well.
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PostSubject: Re: Corydoras "yellowcat"   Sun Sep 24, 2017 6:16 pm

Good information, thanks! I hope the fry from February did well (the little zebra sharks).Very Happy

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PostSubject: Re: Corydoras "yellowcat"   Sun Sep 24, 2017 8:03 pm

Yes, they are doing fine. In fact, there have been at least a couple larger spawns since then and many are out in the hobby now with other Corydoras enthusiasts. Of course, the tiger-striped shark appearance faded after a while. One kind of curious thing happens with this species and I'm not really sure why. About one percent of the young fish are almost completely black, but with a light behind them you can still see the yellow through the fins. I'm saving them and hope to see if they breed true. I have six of them at various stages of development at present.

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PostSubject: Re: Corydoras "yellowcat"   Tue Sep 26, 2017 12:28 pm

That sounds like an interesting breeding project that many would be interested in hearing about. I'll keep my eyes open for the breeding report.

Is it all right with you if I use your image of the male yellowcat, with your CVAS username finzz, on the CVAS facebook page?

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PostSubject: Re: Corydoras "yellowcat"   Tue Sep 26, 2017 9:49 pm

No worries, Deb. Go ahead and use it.

I have a breeding article on the C123 done but it hasn't been posted anywhere yet. It's been in the ACLC newsletter, but I haven't submitted it to the PVAS webmaster yet.
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PostSubject: Re: Corydoras "yellowcat"   Sat Sep 30, 2017 5:02 pm

The breeding article is now up on the PVAS website at  C123
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PostSubject: Re: Corydoras "yellowcat"   Sat Sep 30, 2017 6:51 pm

Is there also a BLog on Planet Catfish? I think I saw a reference to it on the species page.

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PostSubject: Re: Corydoras "yellowcat"   Sat Sep 30, 2017 7:44 pm

I do have a breeder's report on PCF, as does Matt Chambers, who may well have been the first to spawn the species.
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