G. roeselii's mechanism of invasion is still unknown but it is most likely due to human activities such as aquaculture or fish repopulation. G. roeselii were once used as a food source in commercial fisheries, so it is possible that some individuals escaped and were able to populate new areas.
The specific mechanism of invasion by G. roeselii is not yet understood but could be attributed to human activities such as aquaculture or fish repopulation. In the past, G. roeselii was used for food in commercial fisheries; thus, it's possible that some individuals escaped and spread to new areas.