Spaz (51" female) gets 1: 8" - 9" trout/wk Fe (40" female) gets 2: 6" or 1: 8" trout/wk Schiz (40" male) gets 2: 6" or 1: 7" trout/wk
Female mass allows for extra food size. Two inch increase in fish length may double it's weight. These are farm raised trout so they're pretty hefty especially at the 8" mark and up. Spaz can easily swallow a 9 incher, 10 would be tough. I was careful when I selected these at the farm. Feeding only the appropriate number of 6" size for each might be a lot easier on my wife (us) as we only have the fridge freezer now and I use up a lot of space! BUT, Spaz would scarf down four of these with ease. The cost difference would also be greater.