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There are conflicting views on this matter. On the surface it appears that big fish will produce more...well in general that is true but as a fish moves beyond its peak fecundity age its eggs are not as ripe as a younger fish. Most other species have trouble reproducing when they get old. (A 19 year old hottie vs a 75 year old grandma) I know fish reproduce through-out their life but if you have ever opened up a 20#er and a 50#er you will see the color of the eggs in the 50 are indeed different, some look dead. I am not a fish biologist but I would rather bet the biomass future of a species on three 20#ers than one 60#er. As I think 3 20's will produce more than 1 60 and also, If the 60 dies for any reason, you have nothing. If a single 20 dies, you still have 2 more. IMO More is better in this case.
Again I am no expert but I like the idea of protecting everything instead of a subset.
Lastly, Fishery guys have proven they don't know jack%$%$%$%$. If they did we would not have the problems we have now. They have been managing fisheries for decades without results.
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