University of Oxford zoologist Cait Newport suspected the archerfish she was studying could recognize her. The tropical fish—known to spit jets of water at insect prey—would take aim at her when she walked into the laboratory.
Newport and her colleagues showed in 2016 that her fish could indeed remember human visages. She trained them to spew water at a head-on view of a specific computer-rendered face, which they picked out 77 to 89 percent of the time.
