Question

According to fossil records, how long have fish been on Earth?

Answer 1

Fish have been on Earth for around 500 million years, making them one of the oldest vertebrate groups. The first fish were jawless and resembled eels, but over time they evolved into a wide variety of shapes and sizes. Today, there are over 34,000 known species of fish.

Answer 2

According to fossil records, fish have been on Earth for about 450 million years. Fossilized fish have been found in rocks from the early Devonian period, which dates back to the middle of the Paleozoic era. This means that fish have been around for almost half a billion years.