Video file
Many native fish species are able to climb. Watch redfin bullies climbing the wet margin of an inclined drain. In research experiments, these fish could swim up ramps with 15-degree slopes, and climb slopes of 30 and 45 degrees. They used a breast-stroke movement with their large pectoral fins, which gripped the surface.
Te whakamahi i tēnei tūemi
NIWA – National Institute of Water and Atmospheric Research
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