Flirting on the 'Fly' (1 of 2) (IMAGE) Simon Fraser University Caption Researchers at Simon Fraser University found that the photoreceptors in blow fly eyes help filter out incompatible mates. Credit SFU Usage Restrictions None 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.