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The Kneriidae are a small family of freshwater gonorhynchiform fishes native to Africa. They typically live in fast-flowing highland streams, and are small fish, no more than in length. Some species are sexually dimorphic, with the male possessing a rosette on the gill covers that is absent in the females. Other species are neotenic, retaining larval features into adulthood. ==Classification== About 30 species are in four genera: *''Cromeria'' *''Grasseichthys'' *''Kneria'' *''Parakneria'' 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「Kneriidae」の詳細全文を読む スポンサード リンク
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