I did a couple video essays on the book that quote that passage: https://www.youtube.com/watch?v=ZLAvBiols2Y and https://www.youtube.com/watch?v=U4NZdciDozI.

The passage about the fish comes 45 seconds in to the first video in a NY Times quote from it, then the quote in context from the book at 5:15, though I recommend watching both videos and reading the book whole.