A US scientist has used cyborg fish implanted with microchips to help study the daily movements of fish in Lake Huron, says Detroit Free News.
Ray Argyle of the US Geological Survey's Great Lakes Science Center, implanted the tiny microchips, which record the date, time, temperature and depth, into fish after anaesthetising them with clove oil.
Brightly-coloured marker tags on the fins of the fish provide information for anglers who catch the fish and offer them a $100 reward for the return of the fish so the scientists can extract the data from the chip. About 100 of every 1000 chips are being returned.