Native mudfish found for first time in 50 years

The black mudfish (Neochanna diversus), whose numbers are in general decline, is found in the Waikato and Northland.

The threatened native black mudfish has been found in the greater Auckland area for the first time in more than 50 years, the Auckland Regional Council said yesterday.

A large, healthy population was discovered during a survey of a private wetland next to the Lake Tomarata Scenic Reserve, south of Mangawhai Heads.

The black mudfish (Neochanna diversus), whose numbers are in general decline, is found in the Waikato and Northland.

Survey project leader Grant Barnes said the discovery of the freshwater species was a valuable indicator of ecosystem health within the region.

ARC environment management committee chairwoman Dianne Glenn said the find showed the importance of protecting habitats such as wetlands.

"New Zealand has only 10 per cent of its wetlands remaining," she said.

"The farmer that owns this wetland didn't drain it, and fenced it to keep stock out. As a result, a threatened species has survived."

Black mudfish live up to eight years and can grow up to 124mm long.

When the water runs low, they bury themselves in mud and slow their metabolism down until they are no longer breathing.

- NZPA