Fear Conditioning (VIDEO) Research Organization of Information and Systems This video is under embargo. Please login to access this 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. License Licensed content 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.