I've never yet seen the gutts go back to the yellowish tones that they took during (this) their first courtship. They've spawned many times since, and have subsequently always taken colors that you would "expect." They were shipped just a few days prior to taking the pictures above, and that's probably the reason. And yes, they were courting in FL before that. I'm slightly embarrased to admit this, but there could be a further reason: oxygen starvation during transport. They were airport-to-airport (as always) but caught a later flight than planned. So originally we thought there was no need to ask for full bags for each animal beings we didn't expect the delay between boxing and shipping. In this instance, half bags may not have been big enough for roughly 8" critters. All's well that ends welll...