Sound conditioning in fish.

摘要

The method of enhancing the survival and/or growth rates of fish in an aquatic environment, involves providing a feeder at a selected location for dispensing food to the aquatic environment, and providing an acoustic projector for generating acoustic signals within the frequency range 10Hz-4kHz. A frequency is ascertained within the range to which the fish are preconditioned to respond, and food is periodically dispensed from the feeder and, at times coordinated with those at which food is dispensed. The acoustic projector is actuated to generate an acoustic signal at the ascertained frequency. The signal has a duration exceeding one second.