Fish survey of South Passage Shark Bay, Western Australia: Fishes Checklist

In April 1979, 323 species of fish were recorded from the South Passage area of Shark Bay. The majority of these are tropical species (83%), with smaller numbers of warm temperate (11%) and cool temperate (6%) species. Many of the tropical species, however, were found to be present in only low numbers, while some warm temperate and one cool temperate species were abundant. The fishes of South Passage, therefore, are considered to belong to an impoverished tropical fauna. Furthermore, South Passage is the southernmost mainland area of Western Australia which supports a predominantly tropical fish fauna. Its fauna is even more diverse than that of the Houtman Abrolhos, a very much larger area of offshore islands and coral reefs located to the south off Geraldton.1979年4月，科研人员在鲨鱼湾（Shark Bay）南航道区域共记录到323种鱼类。其中绝大多数为热带鱼类（占比83%），暖温性鱼类占11%，冷温性鱼类占6%。然而多数热带鱼类的种群丰度较低，仅部分暖温性鱼类及1种冷温性鱼类种群数量较为丰富。因此，南航道的鱼类区系被认为属于贫化的热带动物区系。此外，南航道是西澳大利亚州最南端的大陆区域，其鱼类区系以热带类群为主；该区域的物种多样性甚至高于赫曼阿布洛霍斯群岛（Houtman Abrolhos）——后者是位于杰拉尔顿（Geraldton）以南海域的规模远更大的近海岛屿与珊瑚礁群区域。