The Earliest fish appeared through the Cambrian as tiny filter feeders; they ongoing to evolve with the Paleozoic, diversifying into several sorts. The earliest fish with committed respiratory gills and paired fins, the ostracoderms, experienced major bony plates that served as protecting exoskeletons in opposition to invertebrate predators. Live reactions https://maps.app.goo.gl/kTisAZCbSjAw6nkX8