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Fish, as far as I know (of course there may be exceptions), don't have any vocal organs, despite the fact they are proven to be social. So how do they manage to communicate with each other? On land, organisms like the honey-bee have their "tail-wagging dance" and ants have pheromones, so what about fish?

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There are a variety of fish species that produce sounds, including many species of Bocaccio (i.e. rockfish). This article is a great resource for learning more about 'fish choruses', a phenomenon where many fishes produce noise during dawn/dusk hours, much like the dawn chorus we're more familiar with for birds.

One of the most famous examples of fish vocalizations is probably the plainfin midshipman fish (listen here!). In this case, the hum is used to attract females for mating.

As for how these sounds are produced, this interview with a scientist at Scripps Institution of Oceanography says

"Fish make sounds by oscillating their swim bladder, or by rubbing the bones where their fins attach to the body, similar to how crickets make sound by rubbing their legs".

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Fish also produce sounds; the difference is that they are put in different positions by the body to sound. The sound produced by fish is about 20Hz and therefore is difficult for humans to hear. However, these sounds can be recorded and reproduced using instruments.

Of course, some fish also rely purely on action to exchange sounds. Some fish use ultrasonic communication, similar to dolphins (although dolphins are not fish).

Some fish transfer information by changing body colour. These fish are usually located in the tropical shallow water. Some fish pass through the water with their fins flapping to communicate courtship information. A few, mostly deep-sea fish, release pheromones.

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    $\begingroup$ What do you mean by " they are put in different positions by body to sound"? Also, it would be really great, if you can provide any reference to substaniate your answer>>> $\endgroup$ Nov 10 '14 at 6:56
  • $\begingroup$ means thier "tail-wagging dance" will make some noise $\endgroup$
    – yazhuo
    Nov 10 '14 at 16:54
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    $\begingroup$ can you provide any reference to substantiate your answer??? $\endgroup$ Nov 10 '14 at 17:12
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    $\begingroup$ Please provide some sources for the information you have in your answer. $\endgroup$
    – rg255
    Dec 2 '14 at 8:41

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