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 Thoracici Linnaeus, 1758
             Genus Gasterosteus Linnaeus, 1758 - stickleback
               1 Gasterosteus aculeatus Linnaeus, 1758 - threespine stickleback
               2 Gasterosteus ductor Linnaeus, 1758 see Naucrates ductor (C. Linnaeus, 1758)
               3 Gasterosteus occidentalis Linnaeus, 1758
               4 Gasterosteus ovatus Linnaeus, 1758 see Trachinotus ovatus (C. Linnaeus, 1758)
               5 Gasterosteus pungitius Linnaeus, 1758 see Pungitius pungitius (Linnaeus, 1758)
               6 Gasterosteus volitans Linnaeus, 1758 see Pterois volitans (C. Linnaeus, 1758)
               7 Gasterosteus spinachia Linnaeus, 1758 see Spinachia spinachia (C. Linnaeus, 1758)
               8 Gasterosteus spinarella Linnaeus, 1758 see Dactylopterus volitans (C. Linnaeus, 1758)