How did Goethe know about evolution before Darwin?
That man comes from fishes seems to be a darwinian idea but were there ideas like these before Darwin?
Maybe unconsciously humans have always known that life emerged from the ocean and fishes, because the first Avatar of Vishnu was also a Fish, and then a Turtle, and then a Boar and so on...
From Faust part II, Thales tells the Homunculus how he can take form as a man as follows:
>Thales: Yield to your praiseworthy wish,
Start at the beginning, with the fish!
Be ready for the swiftest working!
Be ruled by the eternal norms,
Move through a thousand, thousand forms, [8325]
And you’ll ascend in time to Man.