I think when I'm able to get into a house and set up a stable fish room I'll try again. His personality changed completely when I moved him from my old apartment to my new one. In a way, it was like I had already lost the fish I enjoyed so much because he went from a pugnacious, hungry, interactive personality to a skittish mirage that stayed hidden and rarely fed actively. I tried adding dither fish, a mate, changing diet, nothing worked. I also held back from attachment because I knew they were so fragile. Still rough though. Little bastard.