i have a 80 gal tank with 12 assorted peacocks a 2 yellow labs, 1 red zebra, 2 red fin borlei??, and 1 male? frontosa. Anyway the frontosa seems to hide more than the others and he? also comes out to eat brine and pellets but no algae flakes. He comes out only to eat and has been coming out more and more just to sit there and sometimes movement scares him. No scraches no missing fin very healthy 3" front. Why is he not more active?? Your responses will be appreciated.