The torrentfish (Cheimarrichthys fosteri) is at home in torrents. A flattened head and large pectoral fins help it to stay on the stream bed in fast-flowing waters. It is related to the marine blue cod, and its ancestors are thought to have invaded fresh water habitats from the sea.
Te whakamahi i tēnei tūemi
Natural Sciences Image Library of New Zealand
Photograph by Angus McIntosh
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