Genesis 1 : 20- 23 The Fish, whales, birds etc are created on the fifth day :

Genesis 1 : 20- 23

“….. 20 And God said, Let the waters bring forth abundantly the moving creature that hath life, and fowl that may fly above the earth in the open firmament of heaven.

21 And God created great whales, and every living creature that moveth, which the waters brought forth abundantly, after their kind, and every winged fowl after his kind: and God saw that it was good.

22 And God blessed them, saying, Be fruitful, and multiply, and fill the waters in the seas, and let fowl multiply in the earth.

23 And the evening and the morning were the fifth day…….”.

On Day FIVE OF CREATION , we see GOD Creating the AQUATIC KINGDOM and the BIRD KINGDOM.

Each Species of the AQUATIC KINGDOM and the BIRD KINGDOM follows the LAWS OF PROCREATION to bring forth after their OWN KIND OR SPECIES ! ( Genesis 1:11-12 ; Genesis 1: 20- 25 ; Galatians 6-7 ; etc ).