The Earliest fish appeared during the Cambrian as smaller filter feeders; they ongoing to evolve through the Paleozoic, diversifying into numerous kinds. The earliest fish with committed respiratory gills and paired fins, the ostracoderms, had weighty bony plates that served as protecting exoskeletons versus invertebrate predators. Fish are capable to https://maps.app.goo.gl/kTisAZCbSjAw6nkX8