Man my arowana has ragged fins that wont get better. Ive tried melafix. I followed the treatment and did water change and no improvement. Added salt and did more water changes. Still no improvement. Is it a case where the fins are just scared that way or should I try another treatment. Its such a beautiful fish. Always hungry. Swims always, very active and constantly skims the surface for food. But the radgged fin deal takes away from its natural beauty. Help please.