So over the past week I have had some big blow ups with aggression and the firemouth & least dom carpintas have gone to be with Jesus

The Nicaraguensis seems to be the perp which surprises me as they 4-5 on the aggression scale of most places I checked. Ah well, it happens...
Here is a video as promised of the remaining 6 fish. The tank is a little cloudy as I just did a 70% water change this morning, and despite soaking my wood for months with regular wc's, it is still leaking tannins into my tank.
Enjoy!
https://youtu.be/viEjJjYc2ycOne new behavior I haven't ever seen in my 38yrs of fish keeping is that the hartwegi will sit down against the sand and fan with it's pectoral fins furiously and seems to be looking for food in the stirred up substrate. Perhaps they eat aquatic insect larvae and nymphs in the wild. Whatever the reason it is very cool to watch. If I can catch it on vid I will share it here later...