Well, I hope I can shed some light on the subject. Here's its parents, and he's one of those little specks swimming around the parents... Interesting to say the least...
countrykats fish came from that very spawn, and at the time of the spawn there wasn't anything else in the tank that could have hybridized with the female and then just let that big male take over the care....
Syblings from previous spawns at different color stages. The one all the way at the top of the picture hasn't colored up yet. The one at the bottom is on it's way and the one in the middle stayed like that:
And here's the one in the middle today at 7":