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Parental males of the fighting fish (Betta splendens) produce surface waves to communicate with newly hatched offspring (Ku¨hme, 1961). In the days following hatching, juvenile Siamese fighting fish move about the environment but usually remain in contact with the water surface. In response to a disturbance, the parental male positions himself at the air–water interface and rapidly beats his pectoral fins to generate surface waves. The juveniles detect these surface waves through neuromast cells on the head and respond by swimming toward the source of the surface waves. Weiterlesen