Animal Species:Eucla Slickhead, Rouleina eucla Whitley, 1940

The Eucla Slickhead lacks scales with the exception of ring-like scales along the prominent lateral line. The type specimens were collected off Eucla, Westen Australia, hence the species name.

Eucla Slickhead, Rouleina eucla

Mark McGrouther © NORFANZ Founding Parties

Standard Common Name

Eucla Slickhead

Alternative Name/s

Baldfish, Sparkling Slickhead

Identification

The Eucla Slickhead has a moderately elongate body with a single dorsal fin positioned posteriorly. It lacks scales with the exception of ring-like scales along the prominent lateral line. The snout is short and the eyes are very large. There are photophores scattered over the entire body. The species is coloured violet to black.

Size range

The species grows to at least 26 cm in length.

Distribution

The species is found in tropical and warm temperate waters of the Indo-west Pacific. In Australia is is known from off northern Queensland, around the eastern and southern coasts of the country to off southern Western Australia.

The type specimens were collected off Eucla, Westen Australia, hence the species name.

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.

Rouleina eucla

Distribution by collection data

Ozcam map of Eucla Slickhead specimens in the Australian Museums.

What does this mean?

Habitat

The Eucla Slickhead occurs near the seabed in continental slope depths.

Classification

Species:
eucla
Genus:
Rouleina
Family:
Alepocephalidae
Order:
Argentiniformes
Class:
Actinopterygii
Subphylum:
Vertebrata
Phylum:
Chordata
Kingdom:
Animalia

What does this mean?

References

  1. Glover, C.J.M. in Gomon, M.F., Glover, C.J.M. & R.H. Kuiter (Eds). 1994. The Fishes of Australia's South Coast. State Print, Adelaide. Pp. 992. (as R. squamilatera).
  2. 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.
  3. Sazonov, Y.I. & D.F. Markle. Alepocephalidae. In Carpenter, K.E. & V.H. Niem (Eds). FAO Species Identification Guide for Fishery Purposes. The Living Marine Resources of the Western Central Pacific. Volume 3. Batoid fishes, chimaeras and bony fishes part 1 (Elopidae to Linophrynidae). FAO, Rome. Pp. iii-vi, 1398-2068.
  4. Sazonov, Y.I. & Williams, A. 2001. A review of the alepocephalid fishes (Argentiniformes, Alepocephalidae) from the continental slope of Australia: Part I. Journal of Ichthyology. 41(suppl. 1): 1-36.

 


Mark McGrouther , Collection Manager, Ichthyology
Last Updated:

Tags Fishes, Ichthyology, Eucla Slickhead, Rouleina eucla, Alepocephalidae, NORFANZ, Baldfish, Sparking Slickhead, elongate, single dorsal fin, lacks scales, short snout, very large eyes, photophores, violet, black, 10 cm - 30 cm, tropical waters, temperate waters, Indo-west Pacific, continental slope, deepsea,