Imperium naturæ C. Linnaeus, 1758 - nature
   Mundus Plinius - physical world
     naturalia - natural bodies
       Regnum Animale C. Linnaeus, 1758 - animal kingdom see Kingdom Animalia Linnaeus, 1758
         Class Pisces Linnaeus, 1758 see Superclass Pisces Linnaeus, 1758
           Order Apodes Linnaeus, 1758 see Order Anguilliformes Rafinesque, 1810
             Genus Muraena Linnaeus, 1758
               1 Muraena helena Linnaeus, 1758 - Mediterranean moray
               2 Muraena ophis Linnaeus, 1758 see Ophichthus ophis (C. Linnaeus, 1758)
               3 Muraena serpens Linnaeus, 1758 see Ophisurus serpens (C. Linnaeus, 1758)
               4 Muraena angvilla Linnaeus, 1758 see Anguilla anguilla (Linnaeus, 1758)
               5 Muraena myrus Linnaeus, 1758 see Echelus myrus (C. Linnaeus, 1758)
               6 Muraena conger Linnaeus, 1758 see Conger conger (C. Linnaeus, 1758)
               7 Muraena caeca Linnaeus, 1758 see Apterichtus caecus (C. Linnaeus, 1758)