Biologically, there are two types of hybrid. The first is a true hybrid resulting from the breeding of two fish from different taxa. A hybrid from species in two different genera is termed intergeneric. A hybrid from different species within the same genus is termed interspecific, or a cross. A hybrid from different subspecies within a genus is termed intra-specific. While it is very rare, a hybrid from fish of different families is termed interfamilial. The second type is strictly speaking not a true hybrid but is very common. These are crosses between different populations, breeds or cultivars within the same species, in order to produce a fish with specific characteristics. The cory issue under discussion is an interspecific hybrid as defined in the fore-going {genera and lineage are the same here].
I am citing verbatim Ian Fuller's view on hybrids, simply because he says it clearly and I (along with most if not all of the scientific community) am in complete agreement.
In nature some species do occasionally cross, especially at a time when severe conditions bring species together that would not normally be found in the same place. This is known in science as speciating. In the Hobby the species would have to be purposely put together and that would create unnatural crosses, and then we would end up with these hybrids expanding into the hobby and ultimately spoiling the two crossed species.
There are probably in excess of 300 naturally occurring Corydoradinae species, many of which are in danger of becoming extinct in their natural homes and I would like to see efforts being made to preserve these species. I realize that it will be an almost impossible task to try and reinstate aquarium bred specimens back into their natural homes, mainly because these are being or have been destroyed. It is possible however to maintain these species in aquaria and that is what I would like to see. To this end a new data base of registered keepers/breeders has been established on the web site.
I am not going to allow this to be a drawn out discussion. I do not agree with hobby or commercially produced hybrids so such discussions here are banned.