Round goby predation on Hemimysis anomala

► Round goby and Hemimysis co-occur in rocky habitat in the Great Lakes. ► We document the first occurrence of goby predation on Hemimysis in the Great Lakes. ► Predation by round goby on Hemimysis was low. ► Low predation by goby is likely due in part to the evasiveness of Hemimysis. ► An inappropriate oral morphology of gobies probably also contributes to low predation.