Pictures and videos Native Mediterranean fishes (Sarpa salpa, Sparisoma cretense, Oblada melanura, …) and the exotic Siganus rivulatus near a Posidonia patch on a Northern Crete coastal habitat. A mixed school of native and exotic herbivorous fishes on a Northern Crete coastal habitat Siganus rivulatus grazing on a reef flat from the Mediterranean Sea (Sdot Yam, Israel) Siganus rivulatus grazing on a reef flat from the Red Sea (Eilat, Israel)