Yes, humans are vertebrates. Fish are also vertebrates. But in between fish and mammals there were several major steps. Amphibians, lizards, snakes, birds, marsupials, mammals and a few other types of animals are all tetrapods. We all shared one common ancestor that had 4 appendages. I recommend the book "You Inner FIsh" by Neil Shubin.
https://www.amazon.com/Your-Inner-Fish-Journey-3-5-Billion-Year/dp/0307277453
Yes, humans are vertebrates. Fish are also vertebrates. But in between fish and mammals there were several major steps. Amphibians, lizards, snakes, birds, marsupials, mammals and a few other types of animals are all tetrapods. We all shared one common ancestor that had 4 appendages. I recommend the book "You Inner FIsh" by Neil Shubin.
https://www.amazon.com/Your-Inner-Fish-Journey-3-5-Billion-Year/dp/0307277453
When Darwin (C.R.Darwin) said, man evolved from such an ancestor who has common ancestor with chimpanzee, people changed this idea by oversimplification as man comes from apes. Please see the cartoon published against Darwin [attached file]. Now the theory is established.
Same type of matter we are discussing now.
Phrases of the type "humans evolve from X" (replace "X" by "fish", "ape" or any taxon that shares a common ancestor with humans) are severely flawed.
The correct way to express the evolutionary relationship between fish and humans is: "Humans and fish share a common ancestor".
Hope it helps!
In many cases we can be quite certain of what the common ancestor of two present-day organisms looked like, and we can also infer much about the common ancestor's metabolism and other features. In the case of tetrapods for example, we have found fossil evidence of the very early fish-like amphibians which emerged from water onto land. And we can also sequence the gene or complete genome sequences of mammals, amphibians and the types of fish that are closest to those that crawled onto the land, and from those we can infer quite a bit about the common ancestor genes or genomes. This is all discussed in very interesting detail in the book I recommended above, which is a good read even for people who do not study evolution.
It may seem strange that humans have evolved from fish, but the evidence can be found not just in fossils but also within our own bodies.
Please find the attached regarding your question which was discussed By Dr Michael Mosley in BBC News.
A comment on the phrase " early fish-like amphibians which emerged from water onto land.." The idea that the original marine ancestors 'emerged' onto land is pervasive in the history of evolutionary literature (often the idea that somehow there was an advantage to occupying vacant habitats). The empirical evidence from living taxa is that marine forms do not emerge onto land, but they are lifted into that situation by tectonic uplift. Tectonic uplift (along with the opposite) is a pervasive evolutionary process. As land is lifted up, so to are its inhabitants. If they have the biological characteristics that allow survival they will survive and continue to evolve. If not, they become extinct. A classic example of this process is the presence of 'marine' taxa (such as mangrove relatives) on mountains in New Guinea.
Yes, no doubt we evolved from fish. Simple example we can see fish has pair of pectoral fins were converted to two hands of humans!! Jawed vertebrates — such as fish, birds and humans — make up about 99 percent of the vertebrates on Earth. Scientists think that the common ancestor of jawed vertebrates was similar to eyeless, boneless, jawless fishes such as hagfish and lampreys, which diverged from their immediate ancestors about 360 million years ago.
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