alarm substance

fish secretion
Also known as: Schreckstoff

Learn about this topic in these articles:

minnows

ostariophysans

  • knifefish
    In ostariophysan: Alarm substances

    In 1938 Austrian biologist Karl von Frisch introduced an injured minnow (Phoxinus) into a school of the same species and observed that the school rapidly retreated and appeared very frightened. By experimentation he demonstrated that a chemical substance released from the lacerated skin…

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