When fishes, the first vertebrates, evolved, the gene network that builds gill cartilage from those invertebrates was recycled to make fish gills, even as fish evolved a new type of bony skeleton.

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The find expands our understanding of the early developmental stages of rays and their evolutionary branches.

Old Fish Fossil Suggests That Humans Don't Share a Common Ancestor With Sharks, Claim Researchers In 2015, researchers ...

Sharks and rays have populated the world's oceans for around 450 million years, but more than a third of the species living today are severely threatened by overfishing and the loss of their habitat.

bony fish, Osteichthyes; cartilaginous fish, Chondrichthyes; and jawless fish, Agnatha. The discipline can include the biology, taxonomy and conservation of fish, as well as husbandry and ...

This study provides a valuable new resource to investigate the molecular basis of the particular features characterizing the pipefish embryo. The authors found both unique and shared gene expression ...

The study was recently published in the scientific journal "Biology". There have been five mass extinctions in Earth’s history - and one group of animals has survived them all: cartilaginous fish, ...

Feb. 10, 2025 — In swarm research, a new method makes it possible to track the eye movements of fish automatically, non-invasively and in 3D. Researchers explain why this is important for ...