New Zealand Freshwater Fish

11004-05420 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 *

112 / 340

11004-05420 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 *

Southern flathead 05420 galaxiid kokopu Galaxias galaxiidae declining native freshwater fish species swarm nokomai vulgaris