They’re shown as critically endangered, with their quantities declining resulting from overfishing and habitat destruction. Like coelacanth, they've nominal genetic variation concerning populations, producing them additional prone to ailment. They get their name from their fins, paying homage to a hippopotamus’s ears. They’re also related in visual appearance into the https://www.scribd.com/document/820709214/4-Facts-About-Maintaining-Your-Aquarium-by-a-Fish-Tank-Cleaner