| 词条 | Pearleye |
| 释义 |
| name = Pearleyes | image = Benthalbella infans.JPG | image_caption = Benthalbella infans | regnum = Animalia | phylum = Chordata | classis = Actinopterygii | ordo = Aulopiformes | familia = Scopelarchidae | subdivision_ranks = Genera | subdivision =Benthalbella Lagiacrusichthys [1] Rosenblattichthys Scopelarchoides Scopelarchus }} The pearleyes are a family, Scopelarchidae, of aulopiform fishes, distinguished by their unique visual system, with two retinas in each eye.[2] They are small to medium fish, ranging in size from just {{convert|3.7|cm|in|abbr=on}} in adult length to {{convert|35|cm|in|abbr=on}} in length, depending on species. They have a similar appearance to lizardfishes, with a large mouth, numerous teeth, and a forked tail. The dorsal fin is located in the middle of the back, with a small adipose fin.[2] Like many other deep-sea fish, their eyes are telescopic, allowing them to see in near darkness. However, unlike any other fishes, their eyes also possess a "pearl organ"; a white spot on the surface of the eye that may help to pick up light from the side of the fish, out of the normal visual field. The pearl organ is associated with a secondary retina, allowing the fish an unusually wide field of view.[2] Pearleyes typically live between {{convert|500|and|1000|m|ft|abbr=on}}, although some species may visit shallower waters during the night.[2] References1. ^Davis, M.P. (2015): Evolutionary Relationships of the Deep-Sea Pearleyes (Aulopiformes: Scopelarchidae) and a New Genus of Pearleye from Antarctic Waters. Copeia, 2015, 103 (1): 64-71. {{Taxonbar|from=Q1501875}}2. ^1 2 3 {{cite book |editor=Paxton, J.R. |editor2=Eschmeyer, W.N.|author1=Johnson, R.K. |author2=Eschmeyer, W.N. |lastauthoramp=yes |year=1998|title=Encyclopedia of Fishes|publisher= Academic Press|location=San Diego|page= 126|isbn= 0-12-547665-5}} 1 : Aulopiformes |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。