The equivalent resistance and power requirements of electric fishing electrodes

The empirical relationship between different sizes of electric fishing anodes, water conductivity and equivalent resistance was modelled for a range of electric fishing ring anode designs currently in use. In addition, equivalent resistance values were measured for several cathode designs. Knowledge of the equivalent electrode resistance allowed determination of the input power required to energise an electric fishing system for a range of water conductivities, circuit voltages and electrical waveforms. The values of equivalent electrode resistance did not correspond well with values obtained from previously published theoretical methods for calculating equivalent electrode resistance.