The Earliest fish appeared in the Cambrian as compact filter feeders; they continued to evolve from the Paleozoic, diversifying into numerous sorts. The earliest fish with devoted respiratory gills and paired fins, the ostracoderms, had significant bony plates that served as protecting exoskeletons against invertebrate predators. To simplify it, We've https://maps.app.goo.gl/kTisAZCbSjAw6nkX8