|  | 
| Kingdom Animalia | 
|  | Adinia Girard, 1859 – valid – diamond killifishes | 
|  | Adinia multifasciata Girard, 1859 – invalid | 
|  | Alvordius maculatus Girard, 1859 – invalid | 
|  | Aplesion pottsi Girard, 1859 – invalid | 
|  | Arlina effulgens Girard, 1859 – invalid | 
|  | Boleichthys elegans Girard, 1859 – invalid | 
|  | Boleichthys exilis Girard, 1859 – invalid | 
|  | Boleichthys warreni Girard, 1859 – invalid | 
|  | Boleichthys whipplii Girard, 1859 – invalid | 
|  | Boleosoma gracile Girard, 1859 – invalid | 
|  | Bufo lamentor Girard, 1859 – invalid | 
|  | Carangus Girard, 1859 – invalid | 
|  | Carangus esculentus Girard, 1859 – invalid | 
|  | Catonotus fasciatus Girard, 1859 – invalid | 
|  | Cyprinella analostana Girard, 1859 – valid – Satinfin Shiner | 
|  | Cyprinodon eximius Girard, 1859 – valid – Conchos pupfish, cachorrito del Conchos | 
|  | Diplesion fasciatus Girard, 1859 – invalid | 
|  | Engystoma texense Girard, 1859 – invalid | 
|  | Engystoma texensis Girard, 1859 – invalid | 
|  | Estrella atromaculata Girard, 1859 – invalid | 
|  | Fundulus seminolis Girard, 1859 – valid – Seminole killifish | 
|  | Gambusia affinis speciosa Girard, 1859 – invalid | 
|  | Gambusia holbrooki Girard, 1859 – invalid – eastern mosquitofish | 
|  | Gambusia senilis Girard, 1859 – valid – blotched gambusia, guayacón del Bravo | 
|  | Gambusia speciosa Girard, 1859 – valid – southwestern mosquitofish, guayacón de Nuevo León, Tex-Mex gambusia | 
|  | Hadropterus shumardi Girard, 1859 – invalid | 
|  | Heterandria formosa Girard, 1859 – valid – dwarf livebearer, least killifish | 
|  | Lucania Girard, 1859 – valid – brightfin killifishes | 
|  | Myrichthys Girard, 1859 – valid | 
|  | Myrichthys tigrinus Girard, 1859 – valid – tiger snake eel, tieso tigre | 
|  | Myxine limosa Girard, 1859 – valid | 
|  | Oligocephalus grahami Girard, 1859 – invalid | 
|  | Oligocephalus humeralis Girard, 1859 – invalid | 
|  | Oligocephalus leonensis Girard, 1859 – invalid | 
|  | Oligocephalus lepidus Girard, 1859 – invalid | 
|  | Oligocephalus pulchellus Girard, 1859 – invalid | 
|  | Pimelodus confinis Girard, 1859 – invalid | 
|  | Pimelodus cupreoides Girard, 1859 – invalid | 
|  | Pimelodus dekayi Girard, 1859 – invalid | 
|  | Pimelodus graciosus Girard, 1859 – invalid | 
|  | Pimelodus houghi Girard, 1859 – invalid | 
|  | Pimelodus hoyi Girard, 1859 – invalid | 
|  | Pimelodus lynx Girard, 1859 – invalid | 
|  | Pimelodus megalops Girard, 1859 – invalid | 
|  | Pimelodus platycephalus Girard, 1859 – invalid | 
|  | Pimelodus puma Girard, 1859 – invalid | 
|  | Pimelodus vulpeculus Girard, 1859 – invalid | 
|  | Typhlichthys Girard, 1859 – valid – southern cavefishes | 
|  | Typhlichthys subterraneus Girard, 1859 – valid – southern cavefish | 
        
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