I don't think c. atropersonatus have the stripe on the fin. The closest I have found are c. brevirostris, c. delphax, c. leucomelas and c. melanistius but wondered if anyone could tell me for sure?
This is the biggest problem with trying to identify the "spotted" cories. There are so many of them, if you dont know where they were caught or bred, its very hard, if not impossible, to truly identify them.
Its a leucomela (may not be the correct spelling) I have the same =D
I did have 2 but one died after turning grey =\ They are lovely but hard to get hold of where I am.
xx