Flashlight fish have the ability to generate situation-specific blink patterns resembling a visual Morse code. Researchers at Ruhr-Universität Bochum have shown in laboratory and field experiments that the animals use these light signals to coordinate their behavior in the school when visibility is limited. Both the light intensity and the blinking frequency affected the animals’ behavior. The team headed by Peter Jägers and Professor Stefan Herlitze from the Department of General Zoology and Neurobiology has shared their findings in the journal Scientific Reports, published online on 19 March 2021. “Our data show that flashlight fish are attracted by the light signals emitted by other school members,” points out Jägers.
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Source: Phys.org