© 1966 by The Society for Integrative and Comparative Biology
Operant and Classically-Conditioned Aggressive Behavior in Siamese Fighting Fish
Department of Psychiatry and Neurology, University of Minnesota Medical School Minneapolis, Minnesota
Male Betta splendens were conditioned to emit an operant response sequence reinforced by presentation of a model of another male Betta in aggressive display (Thompson, 1963). The color of the model with respect to the color of the subject co-varied with the rate of operant response (Thompson and Sturm, 1965). In another experiment, unconditioned aggressive display behavior elicited by the mirror image of a male Betta was brought under the control of a previously ineffective stimulus by classical conditioning. Relative rates of acquisition of four components of the display were compared. A discriminative conditioning procedure, using two different colors of light as the CS, revealed that the response was elicited specifically by the CS (Thompson and Sturm, 1966).