Fine photos. The last one must have been shot during a spawning sequence when the male was “out” for a short time and only the female left. In very rare cases after the disappearence (death, removal) of the male the female has been observed to care for the eggs and young (Linke with linkei, Finke with paludicola). But I think that the present picture was shot at the occasion of a short “away-from-home”-moment oft the male only at the end of a regular spawning; the female is accepted for a short time only as inhabitant and carer for the eggs.
By the way: the correct name of the locality is Pekan Nenasi (not “Nemasi”).