Deuteronomy 4:18
Ver. 18. The likeness of anything that creepeth on the ground,.... As serpents by many; and indeed that creature is introduced into almost all the idolatries of the Heathens, which seems to take its rise from the serpent Satan made use of to deceive our first parents:
the likeness of any fish that is in the waters beneath the earth; as the crocodile and hippopotamus, or river horse, by the Egyptians; and Dagon and Derceto, supposed to be figures in the form of a fish, among the Phoenicians.