esshup,

Thanks for all of the explicit info!

I suspect your time to do 200 fish is not much more than your time to do 20 fish. However, the shipping cost/fish would be drastically different.

There are certainly people in the market to purchase fish that have no clue as to the effort to raise and ship fish. If I was a fish supplier, I might even have a spot on my web page listing the factors you listed above. People are pissed to see a $400 shipping estimate when they get shipping for free on an inanimate item from Amazon. If they see the inputs, then they might better understand the actual associated costs.