Editing Southwest National Park (section)

=== Fish ===
Another unique aspect to this park is the freshwater community, particularly the fish. As noted by Tasmania Parks and Wildlife, the aquatic system in the park has had no introduced fish species recorded, which gives it high conservation value as there are few systems in Australia where this has occurred.

Although fish are relatively well studied within the park, that is, 37 percent of species have been discovered once,<ref name=":5">{{Cite journal|last=Edgar, Last, Barrett, Gowlett-Holmes, Driessen and Mooney|first=GJ, PR, NS, K, M and P|date=2010|title=Conservation of natural wilderness values in the Port Davey marine and estuarine protected area, south-western Tasmania|journal=Aquatic Conservation: Marine and Freshwater Ecosystems|doi=10.1002/aqc.1079|volume=20|issue=3|pages=297–311}}</ref> the numbers and research undertaken suggests that there is potentially a relatively large number of undescribed or undiscovered fish species that are endemic to the park. With such potential for discovery of new species, that alone would indicate that it remains a significant area for increased biodiversity amongst the marine life and warrants conservation.

However, of those fish species discovered such as the [[cusk-eel]] (''Microbrotula'' sp.) and [[maugean skate]] (''Zearaja maugeana'') which are endemic to the park,<ref name=":5" /> there is one species of fish, known as the freshwater fish Pedder galaxias (''Galaxias pedderensis'') that has been listed both at a Tasmanian and Commonwealth level as endangered in 1995 and extinct in the wild in 2009 respectively. Once endemic to [[Lake Pedder]] within the national park, the Pedder galaxias is unfortunately no longer found within the park with the population only found at two translocations<ref>{{Cite journal|last=Chilcott, Freeman, Davies, Crook, Fulton, Premck, Jarvis, and Sanger|first=S, R, PE, DA, W, H, D and AC|date=2013|title=Extinct habitat, extant species: lessons learned from conservation recovery actions for the Pedder galaxias (Galaxias pedderensis) in south-west Tasmania, Australia|journal=Marine and Freshwater Research|volume=64|issue=9|pages=864|doi=10.1071/mf12257}}</ref> which were part of conservation management program undertaken in the 1980s to protect the species. Alongside the now extinct [[Thylacine]] in Tasmania, this case is indicative of ensuring that conservation measures are taken to protect species that are endemic to a particular area and have high conservation value, such as the Southwest National Park.