11004-05101 Clutha flathead galaxias (Galaxias 'species D') is one 12 recognised taxonomically indeterminate species of non-migratory galaxiids disappearing from southern New Zealand at an alarming rate. 60% of Clutha flathead populations are extinct, and they are now classified Nationally critical, occupying an area of only 11.8 hectares. They are found in the upper tributaries of the Clutha River upstream of Roxburgh, and two tributaries of the Pool Burn. They thrive in headwater streams and seepages that are small enough to step across and are surrounded by grasses and tussock. This large individual is from the Upper Pool Burn *
11004-05105 Clutha flathead galaxias (Galaxias 'species D') is one 12 recognised taxonomically indeterminate species of non-migratory galaxiids disappearing from southern New Zealand at an alarming rate. 60% of Clutha flathead populations are extinct, and they are now classified Nationally critical, occupying an area of only 11.8 hectares. They are found in the upper tributaries of the Clutha River upstream of Roxburgh, and two tributaries of the Pool Burn. They thrive in headwater streams and seepages that are small enough to step across and are surrounded by grasses and tussock. This large individual is from the Upper Pool Burn *
11004-05404 Southern flathead galaxias (Galaxias 'southern') have populations in the Waiau, Aparima, Mataura and Oreti rivers. Some populations are found on Stewart Island/Rakiura, and are thought to have distributed there during the Pleistocene when a land-bridge was present. While galaxiids today are usually found high up in headwater streams where predators cannot reach them, southern flatheads buck the trend. They are more generally found in the mid-to-lower reaches of gravel- and cobble-laden streams and rivers. They are classified as 'at risk' because of declining populations, occupying an area of only 97.1 hectares. Nokomai River *
