So, things continue to progress.
1 'pair' has become dominant. On occasion they start to show their brood colouration (Reported by Newman as the same as the fright pattern - it is similar but not the same IMO)
The interesting thing, is that the dominant colouration is completely different again. The 'pair' consists of 2 fish of different size. I am assuming the smaller fish to be the female, as Newman reports males being larger than females. (They are not mouthbroodrs, so I would expect that).
The smaller fish (female?) is the most aggresive, and is chasing all but her mate, and 1 other large fish (Male?) into a small corner. They are not pugnacious at this stage.
Below is a picture of a Male? in normal colouration:
The pair are shoing a fairly strong lateral band, lining the lateral spots horizontally.
The colour on these guys is great, and the photos dont really show it off well. They look completely different from even slightly different angles. Here is the same male from a different angle:
So, all is going exactly to plan, 12 months of growing on, now in a 350 litre tank, and a pair has formed. They have shown brief displaying, and brood colouration, so it is just a case of keeping the water the same and keeping the food trickling in.