Hawaii is home to several unique freshwater goby species (called o`opu in Hawaiian), most of which are highly adapted and specialized to climb vertical waterfalls to get to spawning habitat. These species are under stress as the result of direct habitat loss from development and water withdrawal along with competition with non-native species and habitat fragmentation from barriers. Similarly, native prawns that are residents of enclosed brackish water bodies. known as anchialine pools, are also under stress from development pressures.
