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Poor recruitment
A problem with recruitment is usually indicated by the absence, or very low density, of fish where they would normally be present. -
Guide to restoring freshwater native fish in streams
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Black petrel & commercial fisheries
Research ProjectBlack petrels are relatively few in number and are sometimes caught on fishing lines and in nets. The effect of fishing-related deaths on the population is unknown. -
Stocking fish
If the low abundance of fish in your stream is not related to a reduction in habitat, waterquality, flow or the presence of downstream barriers, it might be due to the inability of juvenile fish to enter the stream. -
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.