SIX CHEMICALS -- FORMALIN, ACRIFLAVINE, ROCCAL, MERTHIOLATE, BETADINE, AND WESCODYNE -- WERE COMPARED IN THEIR EFFECTIVENESS AS DISINFECTANTS TO BE USED IN THE ARTIFICIAL INCUBATION OF EGGS FROM THE LARGEMOUTH BASS, MICROPTERUS SALMOIDES, LAC. EGGS INFECTED WITH AEROMONAS LIQUIFACIENS WERE SUBJECTED TO 15-MINUTE TREATMENTS OF VARYING CONCENTRATIONS OF THE TEST CHEMICALS. MERTHIOLATE, ACRIFLAVINE, BETADINE, AND WESCODYNE ALL WERE EFFECTIVE BACTERICIDES AT CONCENTRATIONS TOLERATED BY BASS EGGS. THE TREATMENTS OF CHOICE WERE ACRIFLAVINE AT A CONCENTRATION OF 500-700 PPM AND BETADINE, AT 100-150 PPM, ACTIVE I2. ROCCAL AT CONCENTRATION HIGH ENOUGH TO BE AN EFFECTIVE BACTERICIDE WAS DETREMENTAL TO THE VIABILITY OF THE EGGS. FORMALIN TESTED TO THE 2000 PPM LEVEL WAS NOT AN EFFECTIVE BACTERICIDE.