Animal Species:Lance Blenny, Aspidontus dussumieri (Valenciennes, 1836)

Despite having a large fang on either side of the lower jaw the Lance Blenny seems to eat primarily algae and detritus.

Lance Blenny, Aspidontus dussumieri

Lance Blenny, Aspidontus dussumieri
Photographer: Erik Schlögl © Erik Schlögl

Standard Common Name

Lance Blenny

Alternative Name/s

Slender Sabretooth Blenny


The Lance Blenny is white with a dark stripe from the eye to the caudal fin. It has an elongate body with a long-based dorsal fin. The mouth is positioned ventrally below the rounded snout. There is a large fang on either side of the lower jaw.

The Lance Blenny looks similar to the False Cleanerfish but can be distinguished by snout shape and the colour of the stripe on the head behind the eye. The Lance Blenny has a rounded snout with a plain brown stripe behind the eye. False Cleanerfish have a pointed snout and a bluish stripe usually with dark margins.

Size range

The species grows to 12 cm in length.


It occurs in throughout the Indo-Pacific. In Australia it is known from the central to north-western coasts of Western Australia and from the northern coast of Queensland to central New South Wales.


The map below shows the Australian distribution of the species based on public sightings and specimens in Australian Museums. Click on the map for detailed information.  Source: Atlas of Living Australia.

Aspidontus dussumieri

Distribution by collection data

Ozcam map of Lance Blenny specimens in the Australian Museum.

What does this mean?


The species lives in tropical marine waters.

Feeding and Diet

Limited data suggests that the species eats primarily algae and detritus.



What does this mean?


  1. Allen, G.R. 1997. Marine Fishes of Tropical Australia and South-east Asia. Western Australian Museum. Pp. 292.
  2. Allen, G.R., Steene, R. & M. Allen. 1998. A Guide to Angelfishes & Butterflyfishes. Odyssey Publishing/Tropical Reef Research. Pp. 250.
  3. Hoese, D.F., Bray, D.J., Paxton, J.R. & G.R. Allen. 2006. Fishes. In Beesley, P.L. & A. Wells. (eds) Zoological Catalogue of Australia. Volume 35. ABRS & CSIRO Publishing: Australia. parts 1-3, pages 1-2178.
  4. Kuiter, R.H. 1996. Guide to Sea Fishes of Australia. New Holland. Pp. 433.
  5. Kuiter, R.H. 2000. Coastal Fishes of South-eastern Australia. Gary Allen. Pp. 437.
  6. Randall, J.E., Allen, G.R. & R.C. Steene. 1997. Fishes of the Great Barrier Reef and Coral Sea. Crawford House Press. Pp. 557.


Mark McGrouther , Collection Manager, Ichthyology
Last Updated:

Tags Ichthyology, Fishes, Lance Blenny, Aspidontus dussumieri, Blenniidae, white, elongate, 10 cm - 30 cm, stripes or bands, marine, large fang, rounded snout,