The long awaited phylogeny paper resurrecting genera previously in synonymy with has been published.
https://academic.oup.com/zoolinnean/adv ... m=fulltext

The closest to this species is C133.

C. pavanelliae is a lineage 8 sub clade 4 (straight snouted) species

Certainly a water problem, I am certain it is nothing parasitic, but bacteria will infect damaged areas.
The first thing I would do is make a large water change 75% and then add a full dose of API Melafix. The red blotching under the scutes is hemorrhaging most likely caused by nitrite burn. Quite ...

Looking at the tank statistics I think the main problem is that the water is very soft and your nitrates are up a little, and it is the presence of nitrates that is probably causing the problem.

The first thing I would do is a 50% water change and then reduce the amount of food.

With very soft ...

C. leucomelas.

In just under a year from now Corydorasworld will be hosting a "Cory-Vention"

The date is fixed, the Speakers are booked and the venue secured.
This event hosted by Corydorasworld.com promises to be the largest coming together of Corydoradinae scientists and hobbyists ever held anywhere on the ...

All packed and ready to head out to south eastern Peru and the fishes of the Madre de Dios drainage.
Primarily we will be looking for Corys and Loricariids, especially want to see what Loricarids can be found above 1000 meters.

The look like young C. sp C126 but time will tell.

The look to be juveniles of one of the 'elegans' group species, many of the developing young have a pattern like this. What size are they SAL. (Body length).

This fish looks very much like CW026, reportedly coming from Venezuela, but the exact location is not known.
For the record the genus name is Corydoras not Corydora. It is the same for multiple or single fish.
Image courtesy Ian Fuller & Corydorasworld.com
http://www.corydorasworld.com/img/gallery ...

Firstly the original CW014 Red stripe (Not a laser sp) and CW023 Orange stripe (Not a laser sp), were two different groups of fish purchased a different times but from the same store (pier Aquatics) The CW014 "red stripe" had a very red stripe, which was enhanced by the black base of the tank they ...

For those attending if you have catfish you wish to sell, there will also be a number of sales tanks available for hire, but these will need to be booked well in advance to ensure availability. contact chairman@catfish study group.org for details.

Just a little reminder for all would be CSG ...

Smitty, You already have a biannual Catfish convention. The next event is in October.

Baring any late changes, this is the proposed itinerary for this years CSG convention.

With less than three weeks before the ticket discount offer ends, plus the fact that rooms are going very quickly, if you are planning to come to this prestigious event and wish to avoid disappointment, please ...

Also the species called "Deckeri" is known under the C-code C003 and is closely related to C. axeldodi and CW021.

For those that are undecided, this is what you get in the weekend package. Two nights (Friday & Saturday) B&B in a 4 Star accommodation plus a 3 course dinner on each evening. The convention 2 day ticket will enable you to attend all 11 lectures from 9 top class speakers, and if you have never been ...

If you are interested in attending the best annual Catfish Convention on the planet, now is the time to get your places booked. http://www.catfishstudygroup.org/core/c ... n_2016.php

I think for you to get a the true colors of the fish to show you need to keep them over a natural tan colored substrate. Black substrate will always make your fish go dark.

In my opinion the fish in the picture are albino C. zygatus, most if not all albino fish will show the type colour pattern as in the effect of brushed velvet.
I can clearly see all the pattern characters of C. zygatus in these fish.

Personally I think thr RA picture is C. atropersonatus
I have posted an image of all 4 species.
The spotting in both C. atropersonatus and C97 are similar well defined rounded well spaced spots, in C. sychri and C53 the marking are more like small irregular blotches and tend to be more compacted ...

They are both the same species, CW014 was determined on specimens that had been kept over black substrate, which darkened the fish giving them a red stripe. Over normal lighter substrate the stripe is orange. These are not the same and should not be confused with CW010 the 'Gold laser'

Ian

I think the Image in the cat-elog is C. delphax

Ian

For those that are interested, on the 20th September the Catfish Study Group will be holding it's annual Open Show and Auction. There will be many rare and unusual Corys on display in the 5 Corydoradinae classes as well as Breeders and Pairs. The auction will undoubtedly has several lots containing ...

Not C. schwartzi. this species has a black blotch at the base of the first two or three dorsal rays, this colour extends up into the first two soft rays. the dorsal spine is grey. Your fish looks closer to C133 although it does not look in the best of health.

We are now ready at GoWildPeru to provide your personalised fish collecting experience.
We are based in Puerto Maldonado in the Madre de Dios region of south eastern Peru close to the Bolivian border. This is a very bio diverse region, with fish collecting possible pretty much all year round. We ...

I knew of one specimen of C. aeneus, a female that was 42 when it died. I also had a breeding group of C. sterbai that were more than 20 years old when I retired them of to a display tank in the shop where I used to work, that was 2 years ago and they are still there doing just fine.

The trouble is most people treat all Cory species as coming from the same water type and conditions, but I am afraid they "Don't". Far from it, so before deciding what you think they require, a little research into where they came from. I am talking wild imported, not farm raise fish here. Different ...

We all tend to overfeed our fish. In nature there are times of the year when the food supply is very limited if not nonexistent and in some regions this can be for several weeks. Decreasing water levels and dwindling food supplies is a process that takes place annually, in these areas the fish ...

With just over four weeks to go all our room allocations are now taken, but there are plenty of 1 or 2 day, day-tickets available.

We would have liked to have had a few of you US guys make the hop over the pond though. We will undoubtedly be rubbing it in after the event, with tails of the ...

Once they are mature, CW051's are fairly easy to sex via the body shape when viewed from above, otherwise check the ventral fins, males are more elongated and pointed, the females are fan shaped. Breeding this species is not an easy task, I think to date I am the only to successful breed and raise ...