Abstract.-The effect of electrofishing on survival and growth of several species of warmwater fish was evaluated under field conditions. The electrofishing gear had an output of 230-volts, 3-phase AC, and 2-7 amps. Shocked fish held in live cages or a pond experienced little or no mortality in 1-40 days. Tag recapture data for largemouth bass and walleye indicate survival and growth of shocked fish after 1-2 years was not different than fish captured by trap nets or angling. I conclude that 230-volt AC electrofishing can be a practical method to capture many warmwater species for mark and recapture studies in lakes with alkalinities of 26-144 ppm (conductivities of 66-520 micromhos/cm). Output amperage should be regulated so that fish are only briefly stunned.