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Salmon farmers are scanning fish faces to fight killer lice

New technology will use facial recognition to build individual medical records for millions of fish.

Not even fish will be able to escape the onslaught of facial-recognition cameras. Millions of Atlantic salmon could have their faces stored in digital databases to track their health and single out those posing threats to their marine surroundings.

And before you ask if fish have faces, they do: A company in Norway has developed a 3D scanner that can tell salmon apart based on the distinct pattern of spots around their eyes, mouth and gills…