mix it up w/ variety. for instance new life spectrum pellets in the a.m. krill or beef heart in the p.m. see what your fish prefers but give a variety. i even give mine frozen veggies as treats along w/ nightcrawlers or adult bloodworms and the go nuts.FSM;1873005; said:Feeding a 12 or 14 inch oscar nothing but FD would cost a fortune. Hikari Cichlid gold/biogold or Omega One pellets would be good. NLS is also recommended by a lot of people.