|
''Liparis fabricii'', commonly known as the gelatinous seasnail or gelatinous snailfish, is a benthopelagic species of snailfish from the Arctic Ocean. It has a tadpole-like body with a maximum length of about . It is brown to black in coloration with a distinctive dark peritoneum. It preys on small crustaceans and marine worms. It is not commercially important, though it is a valuable food source for predatory fish and seabirds in the Arctic region. ==Description== ''Liparis fabricii'' grows to a length of . The shape of its body resembles that of a tadpole, with a large rounded head and abdomen tapering towards a narrow tail.〔 Two nasal pores are present on each side of the head.〔 The eyes are relatively large, with orbital diameters of 5.3 to 10.3% of the total body length. The mouth is shaped into a suction disc and has simple unlobed teeth. The peritoneum of ''L. fabricii'' is distinctively dark, visible in both the interior of the mouth and behind the gill covers.〔〔(【引用サイトリンク】title=Gelatinous Snailfish, ''Liparis fabricii'' )〕 The pectoral fins are large with the tip reaching the anal fin. The pelvic fins located just below the pectorals are modified into a suction disc. Both the anal and the single dorsal fin are very large, arising from around the middle of the body to where they overlap the small rounded caudal fin.〔 The number of soft rays on the anal fin ranges from 37 to 42, distinguishing them from other species of snailfish which usually only have 36. The dorsal fin has 45 to 50 rays.〔(【引用サイトリンク】title=Marine Species: ''Liparis fabricii'' Krøyer, 1847 )〕 The body of ''L. fabricii'' is smooth and completely scaleless.〔 Like its common name suggests, its skin is somewhat gelatinous in texture and tears easily.〔 ''L. fabricii'' is lighter colored when young, with the pigment cells (melanophores) visible as brownish speckles just under the skin. As the fish matures, the number of pigment cells increases until the fish becomes almost entirely black in adulthood. Males also develop small bumps upon reaching sexual maturity.〔 ''L. fabricii'' can be distinguished from other snailfishes by its dark peritoneum and by the number of soft rays on its anal fin.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Liparis fabricii」の詳細全文を読む スポンサード リンク
|