Hi Bettarazzi and thanks for the welcome
Fang has a white head, blue body and fins, the last centimetre of all his fins & ventrals are red. He's not shiny/metallic/iridescent at all - he’s quite ‘matt’.
The girls colours are still developing - only had them a week but their colours are coming in as very metallic/iridescent:
Girl 1 - mostly black body with blue iridescent overlay, red ventrals, fins are 1/2 red/ 1/2 blue.
Girl 2 - mostly black body with blue iridescent overlay, red ventrals, fins are a pinkish purple and blue.
Girl 3 - mostly green iridescent body, black face, red ventrals, fins are green and red.
Girl 4 - mostly black body with blue/green iridescence, red ventrals, fins are red with a touch of blue/green. This girls fins have much more red than girl 1 and depending on the angle can appear blue or green.
For the first few days the girls were very pale with dark horizontal bars - presume they are stress bars? Now they have all deepened in colour but think they still have some way to go before their final colours develop.