Abstract:The evolutionary history of Southern Hemisphere graylings (Retropinnidae) in Aotearoa New Zealand—including the number of colonisation events, the directionality and timing of dispersal, and their relationship to the Australian grayling—is poorly understood. The New Zealand grayling (Prototroctes oxyrhynchus) is the only known freshwater fish species to have gone extinct since human arrival in New Zealand. Despite its historical abundance, only 23 formalin-fixed specimens (both wet and dried) exist in museum c… Show more
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