You also have to do multiple study's. you say your tiger grew faster with pellets than the other that was fed "blank" did you ever stop and think that maybe the one being fed pellets, was just a healthier datnoid to begin with, or possibly genetics had a play, or male / female growth differences? shrimp, or fish cant be compared to trash or as you stated.
but not to derail this thread anymore. I feed my 2 indos once a day 6x a week usually till they cant eat anymore.
in the past i fed my 4 11-16" widebars and 11" ngt, 2x a day and a variety of food. also had a batch of 20 indos at the time pushing 1" 2x a day