Animal Diversity Web

Culaea inconstans

Brook stickleback

(Also: Common freshwater stickleback; Common stickleback; Five-spined stickleback; Pinfish)

Kingdom Animalia (animals)
- Eumetazoa (metazoans)
  - Bilateria (bilaterally symmetrical animals)
    - Deuterostomia (deuterostomes)
      - Phylum Chordata (chordates)
        
        Craniata (craniates)
        
        Subphylum Vertebrata (vertebrates)
        
        Superclass Gnathostomata (jawed vertebrates)
        
        Euteleostomi (bony vertebrates)
        
        Class Actinopterygii (ray-finned fishes)
        
        Order Gasterosteiformes
        
        Family Gasterosteidae (Sticklebacks and tubesnouts)
        
        Genus Culaea
        
        Species Culaea inconstans (Brook stickleback)