Ok so this is mainly just a I wonder why question. My fish I have had for a while now and he sits close to me. I usually go in close to look at him as we watch each other basically.
Well the other day I got close to the glass and he flared at me, I pulled back he unflared, went in again and he somewhat flared at me, so I pulled back. Any reason he all of a sudden did this? Just those two times since I have had him.