I think I have a major change in thinking regarding the way I feed my  fish. I know that terrestrial animals are not healthy when they are fat.  They certainly have a shorter lifespan then if they are fit and thin  (or at least not fat) It seem to me many of the fish that I see that are  very long life, my friend 
@outerbank,  extremely long life clowns, and Yellow tang are not fat. They are not  thin but not fat like my fish. Also the almost 20 year in captivity  Peppermint angel in Mr. Urakami’s tank, link below, is not fat either. I  am fairly certain that this angel live past his normal life expectancy.
   
 
    The Peppermint Angelfish that won the world over | Reef Builders | The Reef and Saltwater Aquarium Blog  
 Despite the Peppermint  Angelfish’s (Paracentropyge boylei) recent meteoric debut in the  mainstream aquarium trade, it’s status as an iconic book fish has hardly  been relinquished.
    ************.com 
 
 ReefCentral won't let me link, due to their stupid rule not to allow link to other reef pages. You have to do a internet search on the oldest Peppermint angel in captivity.  20 years now.
 
 
Seeing these very convincing evidences, I certainly think that 
it is healthy, and certainly not detrimental to the fish if I do not over feed them, and once in a while, fast them for a day or two.
I feed my tank a lot. All the Nori the fish can eat and 8+ times a day  with automatic feeders and with manual feeding. I will cut down to 6,  for a few months and then 4. I will also cut back on the Nori. and will  relatively cut down on the manual feeding also. 
I hope to be ale to keep my fish for as long as it is natural for the  species. Seeing these extremely long life example, it will try to adjust  my care for them so that hopefully I can successfully replicate these  fine examples.