The famous clown fish, well-known from the movie "Finding Nemo", communicate via sounds. Researchers found out which technique they use to talk with each other: They move their jaws and teeth.
The fact that the clown fish Nemo can talk is completely normal for children. After all the small multicolored fish says "find Nemo" at the current volume in the well-known movie. The truth is clown fish know no language naturally, however they do communicate nevertheless. With movements of their jaws and the friction of the teeth they produce different sounds and crack noises. Researchers from Belgium and the USA presented now how that works exactly in the paper Science. The sounds are predominantly used when they male fish try to get a females attention or when they defend their territory.
The clown fish tones consist of consequences of up to eight single pulses, which only fractions of a second persist. From other fish it is well-known that they produce tones by the friction of bones or with their swimming blister.
By: einstein - 2007-05-21 00:10:26