I've never kept any victorian, but my thinking was (when I asked the questions) was either it wasn't a zebra obliquidens (which obviously it is) or that it was still a juvie and hasn't shown its adult colors (but at 3"+ I'd expect it to if not fully then at least partially color up, including showing the dark black barring, as I see 1.5" zebra obliquidens at my lfs all the time that are fully displaying already).
I see that you have a cory in with it, what other fish do you have in that tank and also what are the water parameters (ph, gh, kh, etc..)?