Were the above studies done on fish in complete confinement where their entire diet was dependent on the supplied feed?
I would surmise the more dependent the fish are on eating only commercial feed, the higher the requirement of proper quality feed would be compared to feed being used as a supplement where a lot of natural food source was available.
Would that be a fair statement to make?
Snrub,
You and I are still on the same page.
Bill D.