Behavioral response to TCA following chronic Triton X-100 treatment and recovery. Prior to the addition of an odorant, control fish spent approximately the same amount of time in all quadrants of the test tank, including the odorant quadrant. After the addition of the bile salt, TCA, control fish showed a significantly increased interest in the quadrant where the odorant was added. The pre-stimulant behavior of chronic detergent-treated animals was similar to control animals, with fish spending about the same amount of time in all quadrants. After TCA was added to the tank, these fish did not exhibit increased interest or show preference for the odorant quadrant and continued swimming around the tank as they had prior to TCA addition. However, when given a recovery period, the amount of time spent in the odorant quadrant after TCA injection increased significantly and behavior appeared similar to controls. * = p<0.05.