Concrete weirs such as the one at Akatore Creek near Waihola keep trout from preying on Otago's endangered native galaxiids. Photo from DOC. : Combined effort to protect rarest native fish

Deep Stream, the pristine headwaters of Dunedin's water supply, is home to Eldon's galaxiid, classified as nationally endangered. Photo from DOC. : Combined effort to protect rarest native fish

The dusky galaxiid, found only in Otago, shares the same threat status as Hector's dolphin. Photo by Simon Madill. : Combined effort to protect rarest native fish

As rare as the kakapo, Teviot galaxiid fish are found in just a handful of remaining populations around Lake Onslow. Photo by Simon Madill. : Combined effort to protect rarest native fish

The natural waterfall at Whare Flat, which keeps trout from preying on Otago's endangered native galaxiids. Photo from DOC. : Combined effort to protect rarest native fish