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Sharptail mola
''Masturus lanceolatus'' also known as the sharptail mola is a species of mola found circumglobally in tropical and temperate waters. It is similar in appearance to the ocean sunfish (''Mola mola''), but can be distinguished by the projection on its clavus (pseudo-tail). Other common names include sharpfin sunfish, point-tailed sunfish, and trunkfish.〔McGrouther, M. (2007): (Sharptail Sunfish, ''Masturus lanceolatus'' ). ''Australian Museum Fish Site''.〕 Rarely encountered, very little is known of the biology or life history of the sharptail mola. It has recently become important to commercial fisheries operating off eastern Taiwan.〔 This species is the only member of its genus.〔Matsuura, K. (2014): Taxonomy and systematics of tetraodontiform fishes: a review focusing primarily on progress in the period from 1980 to 2014. ''Ichthyological Research, 62 (1): 72-113.''〕
==Distribution and habitat==
The distribution of the sharptail mola is worldwide in tropical and temperate waters.〔 They are primarily inhabitants of the epipelagic zone, but are rarely sighted at the surface, with many of those appearing to be ill and parasite-ridden. During the day, they spend most of their time at depths of , preferring water temperatures above 20 °C, but making repeated dives into cooler, deeper water, possibly to feed or to avoid predators. At night, they spend most of their time between . They have been sighted in the mesopelagic zone to a depth of , but may descend to over . One tagged individual in the Gulf of Mexico moved an average of a day.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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