Full Description

"When the feeding noise of yellowtail was produced at one end of the aquarium, the yellowtail at the other section were attracted to that sound source, and the efficiency of phonotaxis was about 60% and the fish moving speed was about 20 cm/sec."

"The result of analyzed feeding noise of the yellowtail was 62-120 Hz in frequency and 57-67db in sound pressure level."

Observation Environment Quotes

"The feeding noise of the yellowtail was recorded by a cassette tape recorder, using a hydrophone, and the frequncies of the sound was measured by frequency counter, and the pressure level of the sound source by sound level meter."

Full Description

"Comparing the phonotactic activity of the yellowtail, the luring noises of anchovy feeding was more efficient of 10% than those of the short-necked clam feeding."

Observation Environment Quotes

"The feeding noise of the yellowtail was recorded by a cassette tape recorder, using a hydrophone, and the frequncies of the sound was measured by frequency counter, and the pressure level of the sound source by sound level meter."