After Froese & Pauly, 2001 [“The Fishbase”]

<==o Gila Baird & Girard, 1854 [?Anchypopsis; Siphateles] Mioc. R. NA. (Chubs) [19]
   |-- G. alvordensis Hubbs & Miller, 1972 (Alvord chub)
   |-- G. atraria (Girard, 1856) (Utah chub)
   |-- G. bicolor (Girard, 1856) (Tui chub)
   |-- G. boraxobius Williams & Bond, 1980 (Borax Lake chub)
   |-- G. coerulea (Girard, 1856) (Blue chub)
   |-- G. conspersa Garman, 1881
   |-- †G. crassicauda (Baird & Girard, 1854) (Thicktail chub)
   |-- G. cypha Miller, 1946 (Humpback chub)
   |-- G. ditaenia Miller, 1945 (Sonora chub)
   |-- G. elegans Baird & Girard, 1853 (Bonytail)
   |-- G. modesta (Garman, 1881) (Salinas chub)
   |-- G. nigrescens (Girard, 1856) (Chihuahua chub)
   |-- G. orcuttii (Eigenmann & Eigenmann, 1890) (Arroyo chub)
   |-- G. pandora (Cope, 1872) (Rio Grande chub)
   |-- G. pulchra (Girard, 1856)
   |-- G. purpurea (Girard, 1856) (Yaqui chub)
   `--o G. robusta -species group (Gila River Chubs)
      |-- G. robusta Baird & Girard, 1853 (Roundtail chub)
      `--+-- G. intermedia (Girard, 1856) (Gila chub)
         `-- G. nigra Cope, in Cope & Yarrow, 1875 [G. robusta grahami Baird & Girard] [hybrid: G. robusta X G. intermedia]

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