I heard from an expert regarding the Synodonis Ocellifer and this is what he had to say after looking at his pictures.. This S.Ocellifer has tell tale signs. of being a pure species....extended upper and lower caudel fin rays..prominent operculler spike, thick mandibullar barbels, size and position of eyes and a large two spot adipose among other things tells us that this is a pure S.Ocellifer. Hybrid in this family is really quite rare ..and to my knowledge purely by chance and not a forced event. There are too many analomical points which indicate s.Ocellifer..if this were a hybrid there would be far more charecterestics belonging to another species. so that is what he had to say.. which you will probably understand this better then me.. since you are so familiar with various parts etc.