Darkvent Leatherjacket, Thamnaconus analis (Waite 1904)

Other Names: Morse-code Leatherjacket

A Darkvent Leatherjacket, Thamnaconus analis, at Noddy Island, Lord Howe Island, December 2008. Source: Erik Schlogl / iNaturalist.org. License: CC BY Attribution-NonCommercial

A bluish-green to olive-green leatherjacket with a large bluish blotch around the anus, very small dots and lines along the side, often pale dashes forming irregular rows along the lower side, a bluish snout, bright bluish fins.

Cite this page as:
Bray, D.J. 2021, Thamnaconus analis in Fishes of Australia, accessed 03 Dec 2023, https://fishesofaustralia.net.au/home/species/898

Darkvent Leatherjacket, Thamnaconus analis (Waite 1904)

More Info


Lord Howe Province and the Lord Howe Rise south of the island, and south of Norfolk Island in the Tasman Sea. Elsewhere the species occurs in the Kermadec Islands and northern New Zealand.
Inhabits deeper reefs.


Dorsal fin II + 33-35; Anal fin 29-33; Pectoral fin 12-13; Caudal fin 12.
Body oval, relatively deep; head large, deeper than long; caudal peduncle about as deep as long; eyes moderately small. First dorsal fin above middle to rear half of eye, spines along lateral surface directed laterally; soft dorsal and anal fins tall anteriorly, margins slightly convex; caudal fin pectoral fin small, rounded; pelvic-fin rudiment small, reduced to 2 pairs of fixed fused spiny scales; caudal fin trucate to rounded.


The specific name refers to the “well-defined” area of black surrounding the anus.

Species Citation

Pseudomonacanthus analis Waite 1904, Records of the Australian Museum 5(3): 173, fig. 32. Type locality: Lord Howe Island.


Bray, D.J. 2021


Atlas of Living Australia

Darkvent Leatherjacket, Thamnaconus analis (Waite 1904)


Allen, G.R., Hoese, D.F., Paxton, J.R., Randall, J.E., Russell, B.C., Starck, W.A., Talbot, F.H. & Whitley, G.P. 1976. Annotated checklist of the fishes of Lord Howe Island. Records of the Australian Museum 30(15): 365-454 figs 1-2 

Clark, M., Roberts, C., Williams, A., Last, P. 2003. Voyage report of a biodiversity survey of seamounts and slopes of the Norfolk Ridge and Lord Howe Rise (NORFANZ), May-June 2003.

Cole, R.G., Creese, R.G., Grace, R.V., Irving, P. & Jackson, B.R. 1992. Abundance patterns of subtidal benthic invertebrates and fishes at the Kermadec Islands. Marine Ecology Progress Series 82: 207-218.

Eddy, T.D. 2011. Recent observations of reef fishes at the Kermadec Islands marine reserve, New Zealand. New Zealand Journal of Marine and Freshwater Research 45(1): 153-159.

Francis, M. 1993. Checklist of the coastal fishes of Lord Howe, Norfolk, and Kermadec Islands, southwest Pacific Ocean. Pacific Science 47(2): 136-170 figs 1-2 

Francis, M. 2001. Coastal Fishes of New Zealand. Auckland : Reed Publishing (NZ) 3rd edn, 103 pp. 

Francis, M.P. 2019. Checklist of the coastal fishes of Lord Howe, Norfolk and Kermadec Islands, southwest Pacific Ocean. figshare. Collection. https://doi.org/10.6084/m9.figshare.c.4428305.v2

Francis, M.P., Grace, R.V. & Paulin, C.D. 1987. Coastal fishes of the Kermadec Islands. New Zealand Journal of Marine and Freshwater Research 21(1): 1-13.

Hutchins, J.B. 1977. Descriptions of three new genera and eight new species of monacanthid fishes from Australia. Records of the Western Australian Museum 5(1): 3-58 figs 1-13 See ref online

Matsuura, K. 2014. Taxonomy and systematics of tetraodontiform fishes: a review focusing primarily on progress in the period from 1980 to 2014. Ichthyological Research 62(1): 72-113

Matsuura, K., Motomura, H. & Khan, M. 2019. Thamnaconus analis. The IUCN Red List of Threatened Species 2019: e.T79800812A79800828. https://dx.doi.org/10.2305/IUCN.UK.2019-1.RLTS.T79800812A79800828.en. Downloaded on 21 October 2020.

Paulin, C., Stewart, A., Roberts, C. & McMillan, P. 1989. New Zealand fish: a complete guide. National Museum of New Zealand Miscellaneous Series 19: 1-279 

Speare, P., Cappo, M., Rees, M., Brownlie, J. & Oxley, W. 2004. Deep water fish and benthic surveys in the Lord Howe Island Marine Park (Commonwealth Waters): February 2004. Townsville : Australian Institute of Marine Sciences 30 pp. 

Stewart, A.L. & Roberts, C.D. 2015. 246 Family Monacanthidae, pp. 1716-1723 in Roberts, C.D., Stewart, A.L. & Struthers, C.D. (eds). The Fishes of New Zealand. Wellington : Te Papa Press Vol. 4 pp. 1153-1748.

Waite, E.R. 1904. Additions to the fish-fauna of Lord Howe Island. No. 4. Records of the Australian Museum 5(3): 135-186 fig. 32 pls 17-24 https://doi.org/10.3853/j.0067-1975.5.1904.1053

Waite, E.R. 1909. A list of the known fishes of Kermadec and Norfolk Islands, and a comparison with those of Lord Howe Island. Transactions of the New Zealand Institute 42: 370-383. (as Cantherines analis)

Quick Facts

CAAB Code:37465084

Conservation:IUCN Data Deficient

Depth:6-360 m

Habitat:Reef associated

Max Size:22 cm SL

Species Image Gallery

Species Maps

CAAB distribution map