Hello Gustav,
this is obviously not A. c. contortrix You may be right about laticinctus, if you can post a photo of the sides or belly of this specimen it can be confirmed whether it is one or a A. c. pictigaster or some hybrid between these 2.
No matter what it is, I would not breed it to your A. c. c. (sounds like you are sure about the ssp.).
Regards,
Rainer