C. aeneus and C. panda are fairly distantly related within the genus Corydoras. Consequently it is probably fairly unlikely that they will interbreed on their own, although someone else might know otherwise.

Does anyone know of any sources of info on long- and short-snout species pairs of Corys? I am particularly interested in which species are 'pairs' and how these come about. I recall having read something about this in one of the aquarium magazines about ten years ago but cannot put my finger on what ...