FIGURE 2 in Sternarchorhynchus curumim (Gymnotiformes: Apteronotidae), a new species of tube-snouted ghost electric knifefish from the low- land Amazon basin, Brazil

FIGURE 2. Electric Organ Discharge (EOD) waveform (left) and Fourier Power Spectrum (right) of Sternarchorhynchus curumim n. sp., MCP 38304 (WGRC 50.231099, female). EOD plotted with head­positivity upwards, voltage on the vertical axis (dashed line = 0 volts) and time on the horizontal axis (scale bar = 1 msec). Power spectrum computed by 65536 point Fast­Fourier­ Transform from a 3 sec digital recording with a sample rate of 96 kHz. The Peak Power Frequency (PPF), which is equivalent to the fundamental frequency, is scaled to 0 dB.