Hey! Nice to see you back, Catherine! Nice to meet you, sphelps! I agree with Matthew (EDIT: and dtech), nice photos! That first one is fantastic. That's pretty much the male aggression/courtship dress, with the yellow on the dorsal and anal fins (I haven't been able to capture it on film yet) and with the intense color.
The second photo was when you first got the male? He's looking pretty starved there. My female got that look along her dorsal (loss of all fat reserves) before I got her onto frozen foods, but her abdomen was also far more sunken than your male there. She looked bad. Unfortunately most of the fish look like that when they get to the LFS, mostly starved.
Sorry to hear about your loss with this guy. He was a pretty one. My two have been living in a tank without any coral at all for roughly three weeks now. So, I guess my advice for next time is try to get them onto frozen foods before you introduce the fish to your SPS tank. Maybe that way the fish won't even look at your corals. I'm planning on introducing corals to their tank eventually. My bet is that they won't touch them.
I should take some more photos. The female has made a bunch of breakthroughs lately. She finally took a (frozen enriched) brine shrimp out of the water column the other day. That's the biggest thing I've ever seen her eat. The next day she chewed a small piece of food off of a larger piece. I'd never even seen her open that tube of a mouth before. And ... the last two days she's been taking Spectrum Grow (the little ones) pellets out of the water column!