Genus Crenuchus♂ GÜUNTHER 1863 クレヌクス属
※← [Crenuchina GÜNTHER 1864]。
◆ Crenuchus spilurus Günther 1863 *1876『Ichthyologische Beiträge 5：Franz Steindachner』。 *1912『The Fresh-Water Fishes of British Guiana, Including a Study of the Ecological Grouping of Species and the Relation of the Fauna of the Plateau to That of of the Low-Land 8, Systematic Account of the Fresh-Water Fishes of British Guiana：Carl Henry Eigenmann』。
"セルフィンテトラ"。臀鰭にアイスポット様班。単独性が強く、平石に産み付けられた卵を雄個体が守る。
Genus Poecilocharax♂ EIGENMANN 1910 ポエキロカラックス属
脂鰭を欠く。洞窟産卵性、ｐＨは４．０〜５．０を維持。
◆ Poecilocharax bovalii Eigenmann 1910
syn.Poecilocharax bovallii Eigenmann 1912 ※スペルミス。 *1909-1910『Reports on the Expedition to British Guiana of the Indiana University and the Carnegie Museum 1908, 1.Some New Genera and Species of Fishes from British Guiana：Carl Henry Eigenmann』。 *1912『The Fresh-Water Fishes of British Guiana, Including a Study of the Ecological Grouping of Species and the Relation of the Fauna of the Plateau to That of of the Low-Land 8, Systematic Account of the Fresh-Water Fishes of British Guiana：Carl Henry Eigenmann』。
ｐＨ７．０・２３〜２７℃。
◆ Poecilocharax callipterus Ohara, Pastana & Camelier 2022 *2022『The Monophyly of Crenuchinae and Description of Two New Species of Poecilocharax [Teleostei, Crenuchidae] Based on Phenotypic and Genotypic Evidence：Willian Massaharu Ohara, Murilo Pastana & Priscila Camelier』。
◆ Poecilocharax rhizophilus Ohara, Pastana & Camelier 2022 *2022『The Monophyly of Crenuchinae and Description of Two New Species of Poecilocharax [Teleostei, Crenuchidae] Based on Phenotypic and Genotypic Evidence：Willian Massaharu Ohara, Murilo Pastana & Priscila Camelier』。