The threat of pest fish
Arapuni rudd feeding
Many people are unaware of the damage done to our waterways by pest fish. Unfortunately some types of introduced fish have spread into the wild, become pests and are threatening New Zealand's freshwater species and environments by:
- Stirring up sediment and making the water murky
- Increasing nutrient levels and algal concentrations
- Contributing to erosion
- Feeding on and removing aquatic plants
- Preying on invertebrates, native fish and their eggs
- Competing with native species