The dark one I titled C. venezuelanus Black is one of the images you sent me for comparison and I assumed it was one of the fish you or Shane originally collected. It looks to be identical to the Llanos fish. The ones captioned C. venezuelanus are f1's from my original wild fish bred in January 1999...

There are many many Corys that live over a layer of leaf litter. This will include any of the fish from the tributaries of the Rio Negro. Generally if the water is moving relatively slowly then there is likely to be leaf litter or other organic material. It is the tannins from such organic material ...

I have been looking into this problem for quite a while and for what they are worth, here are my thoughts. Firstly I am one along with other Cory specialists consider that both C. schultzei and C. venezuelanus to be valid species, which is what they were first described as, it was in the late 70's e...

This is just a little niggle of mine.

More and more people are referring to their Corydoras, and Aspidoras as Corydora and Aspidora.
Corydoras and Aspidoras is the same spelling for a single specimen as it is for a hundred.

Ian

You need to tack some profile images then we will have a better idea.

Ian

There are only 2 lasers, "Green" CW009 and "Gold" CW010, The other one that is referred to as a laser, CW014/CW023 (Same species), is not a laser but referred to as Red/Orange "Stripe".

Ian

Ian

Algae wafers are not suitable for Corys, they are omnivores and require a variety of small foods.

Feeding beef heart to the Discus is fine but like algae not good for Corys.

Ian

C. sterbai, would be a good choice regarding temperature, but the one problem that can occur is with the diet. Basically the high protein foods made for Discus are far too protein rich for Corys, and will eventually cause problems. The only way to combat this is to have a good supply of live foods l...

I would also go with C. delphax.


Ian

They look more like C. stenocephalus

Ian


Image courtesy Ian Fuller & Corydorasworld.com

What size are the fish?

Ian

They actually look more like juvenile C. delfax. Like many of the larger spotted species the pattern changes as the fish grow and become full mature adults.

Ian

I don't think they are C62, the black is confined to the dorsal second and third soft ray. Your fish has the black in mre rays and it extends into the body. I still stick with C151

Ian

This is a difficult one, it is close to C126 and CW029,could also be something new, but without the catch location it will be difficult to be certain what it is.

Ian

Not sure as yet what the species is but it is not C. kanei


Ian

I am not sure where the recommended temperatures have been sourced for the cat-elog but I think most are just averages and not necessarily the best, as is in this case. To breed them I had to push the temperature up over 80ºF.

Ian

I have already posted my opinion of the cause and treatment of this problem in a previous post, and one which is still active.

Ian

I would still go with C151.

Ian

C. loxozonas, I would say it is a water reaction. This species is best kept a little warmer at around 78 - 80ºF and a little softer. Nitrite can cause this, and it will be like a delayed action, it can be short time exposure that starts this mucus release and the fact that you have made a lot of wat...

A bold statement to say that it is not C.leopardus, if you do indeed have C. leopardus please add a picture so we can compare. The fish you show may be C.leopardus, it is very close, it is also close to C131. What would help is to know the location where it was collected, without this information yo...

Basically keep them clean (Good well filtered water)and a good variety of food.

A little research on temperature and water type also helps.

Ian

I first had these in early 2010 and bred them i May of that year.
Below are the water parameters
pH:7.5
GH:9
KH:1.5
Conductivity:360µ/cm
Temp.25ºC (77ºF).
There is a full report in my book "Breeding Corydoradinae catfish" second edition, along with another 152 species accounts.

Ian

Record number of rooms taken.
Record number of delegates booked.
Record number of Germans coming.

All records are being broken this year and everything is looking good for this being "One hell of a do"

Ian

C. sterbai 22 years and C. pygmaeus 14 years

Ian

These are definitely CW051

Ian

Be a little wary with these as when coming into breeding condition there will be a lot of dominant aggression and these are some of the most aggressive of all Corys. In their main tank I would advise plenty of cover and a good open space.

Ian

We are heading for a a record attendance, with all allocated rooms now taken plus another 8 on top.

Plenty of day ticket place available though.

Ian

There are many species that at certain times of the year are found together, whether these species breed in the same locations is to a degree unknown. There are as we know a number on mimics i.e. C. opapoquensis/C. condisciplus, C. imitator/C. adolfoi/C. serratus, C. seussi/C. gossei. I have never s...

I would really like to see a picture of the C.punctatus, this is a fish that I have been trying to obtain for a long time, but I need to know it is the right fish before spending any money.

Ian