The Chinese big salamander is the largest amphibian on earth, achieving lengths of up to two meters. It’s also among the rarest, as it’s estimated there are fewer than 10,000 left from the wild. There are several that you probably by no means even heard of, let alone understood existed; https://aquariumairpump.blogspot.com/2024/08/how-to-install-discus-aquarium-setup.html