Looks like a pair. Fish on the right in 1st & 3rd pic (left in 2nd) is a male. In second photo I almost assumed both were male but after a better gander think you have a pair. Subordinate males can pale and try to look like females to avoid aggression. A "happy" female who isn't pestered will usually develop a purplish belly. In a larger tank, more often than not the female can spend most of her time out of sight until she's ready to breed. In a smaller tank or with a particularly interested male, separating them is sometimes needed, but it's more bluff and stress than actual damage.
Nothing good happens fast in an ecosystem.
Last edited by Blue Ridge Reef; 07-09-2019 at 04:16 AM.