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Evermannellidae : ウィキペディア英語版
Sabertooth fish

Sabertooth or sabretooth fish are small, fierce-looking deep-sea aulopiform fish comprising the family Evermannellidae. The family is small, with just eight species in three genera represented; they are distributed throughout tropical to subtropical waters of the Atlantic, Indian, and Pacific Oceans.
These fishes are named for their oversized, recurved palatine teeth, similar to those of saber-toothed cats. The family is named Evermannellidae after Barton Warren Evermann, noted ichthyologist, naturalist and director of the California Academy of Sciences.
== Description ==
Sabertooth fishes have moderately elongated and compressed bodies which lack normal scales. The head is large and blunt; the terminal mouth is large and lined with slender palatine teeth, the frontmost of which are greatly enlarged and curve inward slightly. A number of shorter, straighter teeth accompany these fang-like teeth. The tongue is toothless. The eyes range in size from small to large; they are tubular in structure and point upwards. The lateral line runs uninterrupted. The different families have 44–54 vertebrae, with three discrete bands of muscle tissue (epaxial, midlateral, and hypaxial) present in the caudal region. Sabertooths do not have swim bladders, and the stomach is highly distensible.
A single high dorsal fin (with 10–13 rays) originates slightly before the thoracic pelvic fins. The anal fin (26–37 rays) is the largest of the fins, and runs along the posterior half of the fish, tapering in height towards the emarginated caudal fin. A small adipose fin is also present. The pectoral fins (11–13 rays) are positioned rather low on the body. All fins are spineless and lightly pigmented in shades of brown.
Sabertooth fish are usually a drab, light to dark brown when preserved; however, a brassy green iridescence is seen on the flanks, cheeks, and ocular region of well-preserved specimens. The naked skin is easily torn. The Atlantic sabertooth (''Coccorella atlantica'') is the largest species, at up to 18.5 cm standard length.

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「Sabertooth fish」の詳細全文を読む



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