I had a pair for about 4 years, when i lost the female i bought an orange female from kevin. then made several generations that had almost tiger stripes until they were 6" or so and then mostly faded to orange. i have one female left ( in another tank) that has the bars and the orange.
This midas is definitely the boss, but a fair boss. The chancho is mellow but seems to know he's catching up to the midas in terms of size
theres another amph in there too, a 8" very green (not lime or yellow) male trimac who is definitely the low man. they all have fin extensions and beg like puppies
all fish are different I've had pushovers and jerks from the same spawn- its luck of the draw or raising them in density- i honestly don't think there is rubric to fit them all