Tracking fish in southern Tasmania
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Research scientists have begun placing dozens of underwater listening devices around southern Tasmania to monitor shark and fish movements.
The 72 receivers will monitor the movement of specially tagged fish in the Derwent River, Frederick Henry Bay and Norfolk Bay for at least the next 12 months.
About 120 animals are expected to be tagged, including seven-gilled sharks, bream, flathead and Australian salmon.
Jayson Semmens from the Tasmanian Aquaculture Fisheries Institute says the listening technology offers new research opportunities.
"Traditionally people have looked at movement of fish species in terms of traditional tagging, where you put a numbered tag into a fish and you release it and then you have to capture it again," he said.
"But, even then, you only really know where it was released and where it was captured, you don't know any information in between."
