Fear Conditioning (video) Research Organization of Information and Systems Share Print E-Mail Loading video... Caption Active avoidance fear conditioning of zebrafish. The fish was placed in a plastic box with two compartments. 10 seconds after LED was on, an electric shock was given (day 1). This was repeated 10 times a day for five consecutive days. On day 5, when LED was on, the fish escaped to another compartment. Credit Koichi Kawakami Usage Restrictions Credit required. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.