Aquatic and Wetland Pests

Introduced fish such as trout and salmon provide recreational benefits to many anglers and are the basis of many a fine meal. There are other introduced freshwater fish such as koi carp, perch, rudd, and tench that could provide some sporting benefit to fisherman, but this would be outweighed by their impact on waterbodies.

Within Nelson, the Department of Conservation have undertaken an active campaign against the fish named above and other fish such as Gambusia. For this reason, they have been included in the Regional Pest Management Plan. Further information on pest fish is contained in the Regional Pest Management Plan.

This section describes aquatic and wetland invaders as identified in the Tasman-Nelson Regional Pest Management Plan.

Please note that most aquatic and wetland plants are dispersed by stem or root fragments, so care should be taken when removing such plants to remove all material. Consider carefully what plants you buy for ponds and aquariums. If unsure, check with a Biosecurity Officer. Never dump aquarium contents or water into stormwater drains or waterways.

For more information see the Controlling Aquatic and Wetland Invaders Booklet.(1.1MB PDF)