00:00who would have thought these small fish being dumped into a machine by the bucket load aren't
00:03being discarded they're actually the most expensive meal in bluefin tuna farming
00:06at port lincoln in south australia bluefin tuna fattening uses one brutally simple looking
00:10operation piles of bait fish poured directly into a machine but the real key isn't the dumping it's
00:15the spinning that follows a rotating feeding device sits at the center of the net cage
00:19the moment bait fish enter the disc they're instantly caught at high speed continuously
00:23chopped while being rapidly scattered then in the next second centrifugal force flings the fragments
00:27outward in a wide ring spreading evenly across the entire net cage no fixed feeding point no
00:31concentrated piling almost the entire cage gets covered large fish can't monopolize everything
00:36small fish don't go hungry the entire school is forced to swim and eat simultaneously growth
00:41rhythm synchronized across the whole group that's the real purpose not simply filling them up but
00:45controlling growth rate scattered feed also doesn't sink directly to the bottom utilization rate is
00:50higher waste is reduced after three to seven months of fattening these originally ordinary juvenile fish
00:55gradually develop into evenly marbled firm-fleshed premium sashimi grade tuna looks like just dumping
01:00fish in and spinning them out but every single rotation is precisely shaping the quality of a bluefin tuna
01:04that's exactly why genuine bluefin tuna sells at prices most people can barely imagine
Comments