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Serratosagitta bierii

Alvariño (1967)

Download a fact sheet for Serratosagitta bierii (PDF 399KB)


Phylum Chaetognatha
Class Sagittoidea
Order Aphragmophora
Family Sagittidae
Genus Serratosagitta
Species bierrii


  • Maximum adult body length 19 mm, tail 22-29% of body

Distinguishing characteristics

  • Serrated hooks 5-7
  • Anterior@teeth 5-8, posterior@teeth 8-16
  • Body firm, opaque
  • Transversal@musculature@absent
  • Head medium width
  • Fin bridge@absent
  • Anterior@and posterior fins@of medium length, fully rayed, rounded;
  • Collarette@absent or short
  • Gut@diverticula absent
  • Small eyes with T-shaped pigment spot
  • Seminal vesicles with@knob@and trunk, close to or touching posterior@fins
  • Ovaries medium length, extend to@ventral ganglion
  • Ova@large
  • Adhesive@papillae@and adhesive organs absent




  • Conway, D. V. P., White, R.G., Hugues-Dit-Ciles, J., Gallienne, C.P. and Robins, D.B. (2003). Guide to the coastal and surface zooplankton of the south-western Indian Ocean, Marine Biological Association of the United Kingdom 
  • Marine Species Identification Portal 201