Scientists are training fish to recognize a human face and spit on it

The archerfish is a species that's got quite an accurate aim at where they're spitting – and in a new scientific study, its next target is a human face. Scientists at University of Oxford and the University of Queensland have conducted a study to teach fish how to recognize human faces. In their experiment, archerfishes were shown a human face, then asked to identify the one they recognize when shown two photos of different human faces. If they spit on the correct face, they are received a reward for good memory (or aim). The experiment found that when the photos were shown in color, the…

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