Class Actinopterygii Woodward, 1891 - ray-finned fishes
   Subclass Neopterygii Regan, 1923
     Infraclass Teleostei Müller, 1845
       Supercohort Teleocephala de Pinna, 1996
         Cohort Elopomorpha Greenwood et al., 1966
           Order Anguilliformes Rafinesque, 1810 - eels
             1 Suborder Anguilloidei Rafinesque, 1810
             2 Suborder Congroidei (Regan, 1909)
             3 Suborder Muraenoidei Rafinesque, 1810
             4 Suborder Saccopharyngoidei