This study examines the relationship between a person's knowledge that a current ego-involving behavior may include health risks and the undertaking of a subsequent behavior change to reduce this risk. Specifically, 396 licensed anglers were surveyed concerning their beliefs about the health risks of consuming sport-caught fish, their knowledge of the risk information contained in the Michigan Fish Consumption Advisory, and their personal fish consumption behavior. Sixty-five percent of the anglers surveyed reported reading part or all of the Michigan Fish Consumption Advisory; however, as a group, they perceived the risks from eating sport-caught fish as small.