Sounds generated by human activities have increased ambient noise levels underwater, both in natural habitats and in captivity. Fishes may be affected through disturbance, deterrence and masking. Two different set-ups were used to test individual zebrafish response behavior to experimental sound exposure. In the first, an elongated fish tank was used to create a gradient of sound pressure levels. In the second, a dual tank set up was used to create a more discrete acoustic transition.
