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The Old World silversides are a family, Atherinidae, of fish in the order Atheriniformes. They occur worldwide in tropical and temperate waters. About two-thirds of the species are marine, and the remainder live in fresh water. The 74 species are in 13 genera. The genus ''Craterocephalus'' is the most diverse with 25 species. Four genera are monotypic. Silversides are relatively small, with the largest species, the jacksmelt, ''Atherinopsis californiensis'', reaching , while most are under , and several are not recorded at more than . The body is generally elongated. Distinctive characters include two dorsal fins widely separated, with the first consisting of flexible spines and the second having one spine followed by soft rays, while the anal fin has one spine on the leading edge followed by soft rays. The pectoral fins tend to be high, and there is no lateral line. On the flanks is a broad, silvery band. The scales are relatively large. They feed on zooplankton. Some species, such as the hardyhead silverside, ''Atherinomorus lacunosus'', are commercially fished. The family Atherinopsidae (Neotropical silversides) is closely related. ==Subfamilies and genera== * Subfamily Atherininae * * ''Atherina'' (7 species) * * ''Atherinason'' (monotypic) * * ''Atherinosoma'' (2 species) * * ''Kestratherina'' (2 species) * * ''Leptatherina'' (2 species) * Subfamily Atherinomorinae * * ''Alepidomus'' (monotypic) * * ''Atherinomorus'' (12 species) * * ''Atherion'' (3 species) * * ''Hypoatherina'' (15 species) 〔Sasaki, D. & Kimura, S. (2014): Taxonomic review of the genus ''Hypoatherina'' Schultz 1948 (Atheriniformes: Atherinidae). ''Ichthyological Research, 61 (3): 207-241.''〕 * * ''Teramulus'' (2 species) * Subfamily Bleheratherininae * * ''Bleheratherina'' (monotypic) * Subfamily Craterocephalinae * * ''Craterocephalus'' (25 species) * * ''Sashatherina'' (monotypic) 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「Old World silverside」の詳細全文を読む スポンサード リンク
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