Lobe Finned Fish

Biological Environment > Lobe Finned Fish

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Lobe finned fish evolved from jawless fish about 390 million years ago. They lived in fresh waters subject to seasonal droughts. Their swim bladder evolved into a sac able to breathe air, similar to the lungfish of today. They had fleshy bases to their fins which were strong and flexible, letting them leave drying pools to find those ponds with water. They evolved into the amphibians. Most are now extinct, except for coelacanths and the lungfishes. They were the ancestors of the amphibians and all higher types of vertebrates, including man.

Contrast this with the other main group of fish, the ray finned fish.