I would like to bring this from
a post in the US Board
"In the Story Quest]Pursuasion, 10 crayfish must be produced for a reward of 2 eels. It takes a 24-hour production in the shellfish farm to produce 1 crayfish, or 10 days to do this quest for a single farm. The basic quest itself is fine (24-hour duration for the production action), but the quantity of crayfish required to complete the quest is excessive, and the reward is minimal, especially for OF4, where most players have very limited space with special buildings, great buildings, etc planted, and, as an aside, have no substantial need for supplies..."
I was just researching which building I would need to construct to complete this unskippable quest. But, seriously, 10 freaking days? That's absurd!