הצגת מקור

It's strange but true that there is certainly really no such thing as fish [http://sangtn.webchuyennghiep.net/cau_ca/cau-ca-giai-tri-bien-la.html cau giai tri] Not like with mammals and avian species, not all the animals we call - aquatic, vertebrate animals protected with [http://sangtn.webchuyennghiep.net/cau_ca/cau-ca-giai-tri-bien-la.html câu giải trí] scales - descend from the same common ancestor. Put another way, if we go back to the most recent common ancestor of everything we now call fish, we uncover that [http://sangtn.webchuyennghiep.net/cau_ca/cau-ca-giai-tri-bien-la.html cau ca giai tri] it was also the ancestral of all four-legged, land vertebrates (tetrapods), which naturally aren't sea food at all.
Biologists call up this 
[http://sangtn.webchuyennghiep.net/cau_ca/cau-ca-giai-tri-bien-la.html câu cá giải trí] a paraphyletic variety of taxa, which in the case of fish involves hagfish, lampreys, [http://sangtn.webchuyennghiep.net/ câu cá], sharks and uv rays, ray-finned fish, coelacanths and lungfish. Indeed, lungfish and coelacanths are more meticulously related to the tetrapods (mammals, birds, amphibians etc) than to fish such as ray-finned species of fish or sharks.
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