Chuco spawn

the intermedia spawned yesterday, eggs still there today, vigorously defending them in a fairly raucous community.

I have them in a 6ft tank with a river type situation, where flow starts on one end, and overflow drilled on the opposite side, maybe 1000gph.
The flow enters right above where they have placed the spawn, a sort of counter current zone.
Seemed all the rain storms of late has fired them up, another female of the 6 total adults is beginning to darken up, and commandeering the other end of the tank.

By the way Matt, I'm sorry to say I found, what I believe to be the male cardozo pike dead in the pond today. Whether or not they consummated their relationship before she took him out, is unknown at this point.

Thanks, the male attacks any attempt to cleans the glass within a foot of the eggs, algae is taking over.
I placed darkened styro panels to help with reflection.
Couple before spawn pics.

Female started to chew the eggs open yesterday afternoon, and looks to be placing the wrigglers in the large PVC cap next to where they were initially placed. Both parents still protecting the area like the investment is serious.

Rock where the eggs were, is totally cleaned off today, the the pair is now guarding the PVC cap. Hoping this remains the scenario, in theory, it could be easy to remove the cap with the fry in it, to a rearing tank.