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Firstly, the size of your gravel is somewhat on the large side, which means that the Cory have to work really hard with it's barbels to reach food particles. The barbels are sensory organs not built to be used for moving gravel, a fine smooth sand is far better and will also be more natural for...

I am not totally sure about the natural habitat of C. sterbai, or in fact which strain you may have, but I would think that there may have been something the disturbed the fish, something like a reflection coming from above, which could have looked like a predators approach to the Cory. Ian

This is a defensive action and something that quite a number of Cory species do, especially those that naturally inhabit areas where there is no aquatic fauna. Ian

The normal hatch time for C. aeneus (Bronze Cory) is usually around 4 days (96 to 100 hours) at average temperatures 23ºC to 26ºC (73ºF to 78ºF). There is one product that has proven to be good at protecting Cory eggs from fungal attack and that it API's Pimafix, this is an organic treatment...

The only thing that tends to take place with Corys that are kept over black substrate it that their colours darken to try and blend in better, however albino's tend to show a more golden colour over black. Ian

Sexing Corys is not always a simple case of the bigger fatter female ams slim smaller male, although generally this is the case, with the perfect example shown in inchworm's image of C. panda. Sometimes it is far more difficult and there is very little difference. In cases where you cannot tell...

I am firstly not yelling at you, I merely stated a fact to a member regarding where some of my work could be found and a short explanation why most of my stuff is locked in the private area of my site, I did not even mention Bryan, you did. Regarding ridicule, I have never ridiculed you for...

This is something that happens with females, unlike some fish that become egg bound, a female Cory will get rid of her eggs, which will just fungus and dissolve away. Ian

We also clearly post links to Aquabid and PlanetCatfish. But they don't charge a fee to read their material. laugh. OK, let me explain something to you, which i am sure I have done before. I wanted to give to all that wanted it the knowledge that I have gained keeping and breeding Corydoradinae...

I currently have 82 species of Cory and 1 brochis species. I keep thinning down but the list just seems to keep growing. Ian

llj, Most of my writings have been published in Practical Fishkeeping & Today's Fishkeeper, the latter publication is not no more. Plus a couple of pieces have been published in the US. Most of my current stuff is in the members area on my own site Corydorasworld, until late last year it was...

I used to believe the theory that the female Cory swallowed the male sperm and passed it through the gut to be released through her anus and into the ventral pouch formed by her ventral fins and published this theory in the first edition of my "Breeding Corydoradinae catfish" book in 2001...

One thing to remember is that the majority of C. aeneus, paleatus, panda, trilineatus and even sterbai are now being farm bred and as such these strains have evolved to the conditions provided for them. The temperature references I have given are for wild caught fishes and in the main are...

You could try the Catfish Study Group auction in November http://www.catfishstudygroup.org/diary/diary_2007.htm I cannot garuntee there will be C. panda there, but there could be. I have access to farm bred from the CR, but they are not what I would call the best I have seen. Ian

C. longipinnis is a species from Argentina and as such their temperature range is low. Irrespective of any comments about people saying they keep their at higher temperatures, their actual range is 15ºC to 23ºC (59ºF - 73ºF) and will usually not breed at temperatures above 17ºC. There is...

There are a few species which are considered warm species and the top of the list is C. gossei and possibly C. seussi, these will quite happily live at 30ºC (86ºF). At the other end of the scale there are the cool species, which include C. paleatus, C. longipinis, C. undulatus and C...

There are other small Corys that would be ok in a 12 x 8 x 8. C. habrosus, C. hastatus, C. albolineatus, C. multimaculatus, or even some of the smaller Aspidoras such as A. pauciradiatus, A. depinnai or A. sp C35 the "Black phantom". These are all what I would term as dwarf species and 5 or 6...

The only clue would be where the fish were shipped from, Belem and they could be C . julii, Iquitos, Peru and they are almost certainly C. trilineatus. It is very unlikely that Bryan's or any other's exporter will divulge the location of their catches, that is assuming they actually know. Most...

The so called neon orange Cory is a undescribed species coming from Peru. It is a natural species and has been successfully bred both in the UK & USA. Ian Corydoras sp Gold/Orange laser Picture courtesy Ian Fuller & Corydorasworld.com

There is a little more to it than just adding cold water. First of all you need to be sure that you have good adult stock, i.e. adult males and females. ideally 2 males per female. Then they need to be conditioned to bring them into breeding condition. Good food and regular clean water changes...

Sorry if I sound a little ticked off, but I have explained the origins of the C. sp 'Black' three times on this site and the last time in detail within the last month. Now I am getting on in years and my memory is not brilliant (Never was actually), but I wonder if people actually listen or take...

Possibly C. agassizii. Ian

Possibly C. agassizii. Ian

Possibly C. agassizii. Ian

On average Cory eggs take between 3 and 5 days, There are reports of eggs taking over a week, but that is exceptionally rare and I think that some change in the conditions caused a temporary halt, a little like some Killie fish eggs that will only hatch when all parameters are suitable. What...

The C. schultzei "Blacks" are no way as prolific as the normal C. aeneus (bronze). AlaxAndCarmen's "Blacks" have a long way to go before they are anywhere near to breedable size, I would think at least a year. Ian

Have a look here I an sure you will find the fish from your lfs. Ian The so-called 'aeneus' group

I would suggest at least six if not more, there are fairly cheep. Also there are quite a number of small to medium sized species that would go well with the corys, i.e. Danio choprae, Danio nigrofaciatus to name but two, or some of the small tetras such as the lemon fin, red or black phantoms...

The problem with the so-called "aeneus" group is there appears to be a variant in every major river system from Colombia to Argentina, many of these are considered to be distinct species, but without seeing a picture of the fish that Supersalmon saw in the lfs I would be impossible to say what...

Littest, Your 7.5 imp gal (9 us gal) would be perfect for a dozen or so C. pygmaeus, but without the Betta and I am assuming it is the showy large finned Betta splendens you are talking about. I find Betta's are unpredictable at the beat of times. If the Betta is your priority I would look...

This is a picture of the true Corydoras eques. Corydoras eques Picture courtesy Ian Fuller & Corydorasworld.com Most if not all of the fish exported as Corydoras eques turn out to be a colour form of Corydoras aeneus. The true Corydoras eques is unmistakable as you can see from the picture. Ian

The so-call 'Super schwartzi' are closely related to C. pulcher and were stated as such by Nijssen in 1973, however after close examination it can be seen to be not actually related to either and should prove to be a distinct species in it's own right. It has the id number CW028. They have also...

I would say it is a juvenile C. paleatus, like most Corys the pattern will change as the fish grow. Ian

A few days ago a new long awaited Cory description was published. The new species is Corydoras longipinnis Knaack, 2007 The species has been around for a number of years, although it has only recently been more abundant in the hobby. It was known as C. sp long finned paleatus (Not to be...

S. eupterus is an 8 inch (20 cm) Standard length fish. It is also not a Corydoras and therefore the topic should actually be moved into Other Catfish. Ian

A young Synodontis eupterus, Ian

Barracuda, It may be several months before any males start to show through, this is pretty much the norm with Scleromystax species. This is the original pair I bred from in 1980, originally thinking them to be S. barbatus. Ian Picture courtesy Ian Fuller & Corydorasworld.com

Just to put another fact into the pot, there are NO naturally pure black Corys in the wild, so the dense black Corys we have in the hobby have all descended from the German strain. Those of you that have or are buying young from this strain will have fish with reddish fins, these will darken...

Getting back to the issue of the C. aeneus "Black", if what I quoted from Hans's statement had been digested properly, "The black ones have orange fins in the first months of their life and so does one type of aeneus from Venezuela. This type lives in the Llanos of Venezuela and also Colombia...

Just a word on trilineatus and julii and without casting any doubt on anyone's identification capabilities, unless the actual collecting site is known. i.e. the river from which the fish were caught it is impossible to state that the fish called C. julii are actually that species. The colour...