Only found in northern New Zealand, the kōheru (Decapterus koheru) averages around 25–35 centimetres, and it may reach 40 centimetres long. It is less common than jack mackerel, which it closely resembles. Kōheru form large schools with fish of similar size. They feed on plankton.
Te whakamahi i tēnei tūemi
Photograph by Malcolm Francis
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