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The Distichodontidae are a family of fresh water African fishes of the order Characiformes. Two evolutionary grades are found in this family; micropredators (predators of very small organisms) and herbivores have a nonprotractile upper jaw and a deep to shallow body, while carnivores have a movable upper jaw and an elongated body.〔 The fish vary greatly in size among species, with the micropredators being less than in length, and the largest carnivores can reach up to . ==Genera== The 17 genera include about 90 species: * Genus ''Belonophago'' (two species) * Genus ''Congocharax'' (two species) * Genus ''Distichodus'' (23 species) * Genus ''Dundocharax'' (one species) * Genus ''Eugnathichthys'' (three species) * Genus ''Hemigrammocharax'' (10 species) * Genus ''Hemistichodus'' (three species) * Genus ''Ichthyborus'' (four species) * Genus ''Mesoborus'' (one species) * Genus ''Microstomatichthyoborus'' (two species) * Genus ''Nannaethiops'' (two species) * Genus ''Nannocharax'' (28 species) * Genus ''Neolebias'' (11 species) * Genus ''Paradistichodus'' (one species) * Genus ''Paraphago'' (one species) * Genus ''Phago'' (three species) * Genus ''Xenocharax'' (one species) 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「Distichodontidae」の詳細全文を読む スポンサード リンク
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