Figure 3 in Allopatric differentiation in the Marcusenius macrolepidotus species complex in southern and eastern Africa: the resurrection of M. pongolensis and M. angolensis, and the description of two new species (Mormyridae, Teleostei)

Figure 3. Oscillograms of the waveforms of electric organ discharges (EODs) in the M. macrolepidotus species complex. (A) specimens from the Buzi River (Mozambique), (B) from the Okavango River (Botswana), (C) from the Upper Zambezi and Kwando Rivers (Namibia) as indicated, (D) from the Incomati System (South Africa), (E) from the Tana River (Kenya). J, juveniles; F, females; M, males, all with standard length in mm. (C) Superimposed baseline shown in male discharge of long duration. Head-positivity is upwards. Abscissa, see time bar (identical for all). All waveforms normalized to 25uC. (A, lower right) Head-negative pre-potential present in specimens from the Upper Zambezi/Okavango Systems, not from the Buzi River nor any other origin (amplified 63).