Full Description

". The first five sounds from six specimens of P. meeki ranged from 64-318 ms with most between 76-150 msec in duration (Fig. 2)."

"The sounds of P. meeki were composed of lower frequencies and fewer pulses than those of P. cruentatus."

"When chased under water, they produced knocking sound."

Observation Environment Quotes

"Sounds were produced by fish held by hand under water in the laboratory about 10 cm from an Atlantic Research Corp. hydrophone (LC-57). "

Behaviour Description Quotes

"Sounds were produced by fish held by hand under water in the laboratory about 10 cm from an Atlantic Research Corp. hydrophone (LC-57). "

Sound Name Quotes

"The sounds of P. meeki were composed of lower frequencies and fewer pulses than those of P. cruentatus."

" When chased under water, they produced knocking sound."

Full Description

"Sounds produced by normal P. cruentatus contained frequencies between 75 and 1200 cps, with most energy between 150-300 cps (Table 1)."

". In seven specimens of P. cruentatus, they ranged from 76-839 msec, with most between 300-600 msec in duration."

"The sounds of P. meeki were composed of lower frequencies and fewer pulses than those of P. cruentatus."

"When chased under water, they produced knocking sound."

Observation Environment Quotes

"Sounds were produced by fish held by hand under water in the laboratory about 10 cm from an Atlantic Research Corp. hydrophone (LC-57). "

Behaviour Description Quotes

"Sounds were produced by fish held by hand under water in the laboratory about 10 cm from an Atlantic Research Corp. hydrophone (LC-57). "

Sound Name Quotes

"The sounds of P. meeki were composed of lower frequencies and fewer pulses than those of P. cruentatus."

" When chased under water, they produced knocking sound."