De Generatione Animalium
Aristotle's treatise on animal reproduction.
Chapter I (The Six Days of Creation)
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Verse 22: And He Blessed Them, Saying: Increase and Multiply
— Cited (Book III, ch. 11) on moisture being more suited to forming offspring
"because, as Aristotle says, Book III On the Generation of Animals, chapter 11, the moisture in which fish abound has a nature more suited to forming and shaping offspring than earth does."