it consists of other commercial species that may be secondary targets or may become target species if the market develops and noncommercial species returned to the sea or landed in case of a discard ban as well as incidental catches of vulnerable species which may include species of commercial value or not formally declared as vulnerable or species at risk as a result of natural or more commonly anthropogenic pressure including fishing pressure figure fisheries impact not only target resources eg fish crustaceans and cephalopods but also many other species that are relevant to the functioning of the overall ecosystem jackson et al