Thanks so much for the quick response. It's difficult to tell how fast/if the mass is growing now because it's INSIDE his lower jaw, and it's now started to turn the color of the inside of the rest if his lower jaw...So now whatever it is on the inside is blending in. But it does look "fleshy".
I'll try to describe that better...When he exhales, a bit of whatever this "growth" is, is pushed out a bit by the force of the water running across it. He does not seem to have any other growths on his body. I took those pictures right after I had fed my fish, and for a reason I still have not been able to put my finger on, when I feed my fish the frozen mysis/plankton/cyclopeze that I prepare with garlic/vitamins/omega-3s, I get a sudden MASSIVE amount of microbubbles from my returns. Maybe that's something to bring up in another thred, because I've NEVER, in all my years of reef keeping, seen that happen. And it's only since I replumbed my tank to replace the mag 24 I had as my return with my blueline 70...Weird...
anyway, back the the fish issue, so those things in the picture are microbubbles. So every now and again the fish get them stuck to their fins...Plus I have VERY fine substrate in my tank, and the male anthias has been doing a lot of hiding in the rocks, so sometimes a bit of the substrate sticks to him.
Your theory about his mouth rubbing against the bag is something that did run across my mind. When I received the trio, the male's bag had less air in it that the two other bags, so it's possible. But the sore seemed older. Now that I'm seeing it each day though, I'm thinking the part on the front of his jaw, on the outside, is most likely from rubbing against the bag. But that fleshy mass wasn't really apparent until the next day. So I'm starting to wonder that maybe because of poor packaging, his jaw rubbed itself raw on the bag, and now it is maybe infected THROUGH to the inside. The fact that the area seems to be turning more of the color of the surrounding tissue leads me to believe that it is becoming less irritated (therefore, less blood flow causing discoloration), and maybe it is beginning to just scar over. If that's the case, I will be much less worried as far as the health of my other fish, but I am still QUITE dissatisfied with my experience as far as the online site I ordered these fish from...But I will have to deal with customer service as far as that is concerned. I just don't want my tank to be infected with anything.