For example, when a carp is injured, it releases large amounts of pheromones into the water around it, as a result of trauma and stress. The chemical signals are detected by other fish of the same species and they interpret this as a signal of extreme danger and they swim away from the signal as fast as they can.
Other fish produce sounds but this may be more for display than communication. The satinfin shiner, a North American Minnow produces a high pitched purr by releasing bubbles from its swim bladder. Males also produce a sharp knocking sound when they fight. Females partnered to the males can recognise the sounds made by their own mates.
how many types of communication are present in fishes?
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