The New Zealand grayling, was known by the Māori people by many names including pokororo, paneroro, kanae-kura, however, the most common being Upokororo. ... In August 2018 the New Zealand Department of Conservation classified the New Zealand grayling as "Extinct" under the New Zealand Threat Classification System.

How did New Zealand grayling go extinct?

The extinction of the New Zealand grayling (Prototroctes oxyrhynchus) has been blamed on over-fishing and predation by introduced trout, but these explanations fail to account for the species disappearance from isolated, uninvaded rivers.

Are grayling extinct?

The New Zealand grayling, Prototroctes oxyrhynchus, is an extinct smelt of the genus Prototroctes, which was found only in lowland rivers and streams of New Zealand.