That's the behaviour of a red tailed shark, how many gallons is the tank, and does he have his own hding spots in the tank.
Yes they need a 40gal, that tank is way to small, i would take him back to the lfs, as he will just pick the fish off as the tank is too small for him, sorry.
Well some fish that are already old to the tank may pick on new fish. They sometimes think that the new arrival is a threat to his territory. But I isolate the one that picks on him in a isolator.. Then eventually they would stop.Yes they need a 40gal, that tank is way to small, i would take him back to the lfs, as he will just pick the fish off as the tank is too small for him, sorry.
he has stoped doing it now![]()