The tools available for restoring native fish to streams depend on what is causing fish to decline.
See the "Identifying the Problem" section
A decision support system (DSS) for the main fish species found in New Zealand streams shows which of the restoration options below is likely to help restore the species in your stream.
See the decision support system (DSS)
Click on the links below to find out more about restoration options for the problems in your stream.
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Stocking fish
Low recruitment could also be caused by widespread depletion of stocks -
Restoring fish passage
The movements of many juvenile native fish are often hindered by barriers to fish passage such as dams, weirs, falls, tide gates, culverts, screens and high water velocities. The New Zealand Fish Passage Guidelines sets out recommended practice for the design of instream infrastructure to provide for fish passage. -
Restoring physical stream habitat
Fish species thrive in a variety of different habitats. -
Restoring fish food
Small native fish eat a range of benthic invertebrates in streams. The larvae of mayflies and caddisflies are the most important food species, with chironomids being important for juvenile fish and in streams where all other prey are scarce.