New Zealand Freshwater Fish
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DSC_9449 During major earthworks such as this, eroded soil settles out of the water as sediment between the stones of the substrate. Native fishes spend their inactive periods hiding amongst these stones, many lay their eggs under them and some burrow down deep amongst them to seek refuge from floods or droughts. Once these gaps become clogged with sediment there is less habitat for native fish. Maruia *
DSC_9449majorearthworkserodedsoilfreshwatersedimentsubstrateNativefishesfishstonesrefugefloodsdroughtscloggedhabitatdestructiondegradationMaruia