Good to see there are others in Australia also interested in Corydoras.
There are quite a lot of species in Australia at any one time. At the moment I am building my collection.
I currently, have the following;
aeneus, aeneus albino, atropersonatus, axelrodi, loretoensis, agassizii, reticulatus, weitzmanni, aeneus/schultzi 'black' venezuelanus, trilineatus, gold laser, schwartzii, sterbai, sterbai albino, arcuatus, melanistius, davidsandsi, panda, oiapoquensis, septentrionalis, zygatus, diphyes, paleatus, virginiae, habrosus, pygmaeus, gossei, adolfoi, duplicareus.
Also have Brochis splendens.
Hopefully picking up caudimaculatus, similis, rabauti, melanotenia and hastatus this weekend.
There others in Australia who have way more than this, though this gives you and idea of what is available.
Cheers,
Serkan