Banded Rockcod, Hyporthodus ergastularius (Whitley 1930)


Other Names: Barcod, Down-under Grouper, Grey Banded Cod, Grey-banded Rock-cod, Rockcod, Sevenbar Grouper

A juvenile Banded Rockcod, Hyporthodus ergastularius, in Nelson Bay, Port Stephens, March 2014 - depth 7 m. Source: Dave Harasti / http://www.daveharasti.com/. License: All rights reserved

Summary:
A pinkish-grey to greyish-brown grouper with darker fins with white margins, and with or without dark bars on the body. 
Juveniles are pale brownish to dark brown, with narrow white bars alternating in thickness along the body. The anterior bars extend onto the dorsal fin, and the last bar is on the caudal-fin base. Juveniles also have a prominent black streak just above the upper jaw.
Authors often refer to this species as Epinephelus ergastularius.

Cite this page as:
Bray, D.J. 2018, Hyporthodus ergastularius in Fishes of Australia, accessed 18 Jul 2018, http://fishesofaustralia.net.au/Home/species/3853

Banded Rockcod, Hyporthodus ergastularius (Whitley 1930)

More Info


Distribution

An Australian endemic known from off Dunk Island, QLD, south to about Eden, NSW; also in the Lord Howe
Island region and on the Norfolk Ridge in the Tasman Sea. Adults mostly inhabit deep reefs, while juveniles may occur in shallower waters.

Features

Dorsal fin XI, 14-15; Anal fin III, 9-10. 

Body depth 2.6-2.9 times in SL; head length 2.4-2.6 times in SL; slightly convex interorbital area and dorsal head profile; subangular preopercle, finely serrate, serrae on rounded corner not enlarged and ventral edge with 1-4 small serrae; almost straight upper edge of operculum; posterior nostrils 2-4 times larger than anterior nostrils; maxilla reaching almost to vertical at rear edge of eye; 2 rows of small teeth on midlateral part of lower jaw 

Feeding

Carnivore - feeds on fishes, crustaceans and molluscs. A juvenile was taken on hook and line in Sydney Harbour using squid as bait.

Biology

A protogynous hermaphrodite. Females are thought to mature at between 70 and 80 cm in length and 6 to 8 kg in weight.

Fisheries

Fished commercially in deep waters in the New South Wales Ocean Trap and Line Fishery, mostly on vertical droplines. The species is also caught on deep reefs in Queensland.

Remarks

Epinephelus ergastularius may be a complex of several cryptic species.

Species Citation

Epinephelus (Schistorus) ergastularius Whitley 1930, Aust. Zool. 6(2): 119, pl. 14(fig. 1). Type locality: off Long Bay, near Sydney, NSW, Australia. 

Author

Bray, D.J. 2018

Resources

Australian Faunal Directory

Banded Rockcod, Hyporthodus ergastularius (Whitley 1930)

References


Craig, M.T. & Hastings, P.A. 2007. A molecular phylogeny of the groupers of the subfamily Epinephelinae (Serranidae) with a revised classification of the Epinephelini. Ichthyological Research 54(1): 1-17.

Craig, M., YJ.S. de Mitcheson & P.C. Heemstra. 2011. Groupers of the world: a field and market guide. North America: CRC Press/Taylor and Francis Group. 356 pp. (as Hyporthodus ergastularius)

Griffin, L.T. 1926. Descriptions of New Zealand fishes. Transactions and Proceedings of the New Zealand Institute 56: 538-546. 

Heemstra, P.C. & Randall, J.E. 1993. Groupers of the World (Family Serranidae, Subfamily Epinephelinae). An annotated and illustrated catalogue of grouper, rockcod, hind, coral grouper and lyretail species known to date. FAO Fisheries Synopsis No. 125 Vol. 16. Rome: FAO. pp. 1-382 (as Epinephelus ergastularius)

Heemstra, P.C. & Randall, J.E. 1999. Family Serranidae. pp. 2442-2548 in Carpenter, K.E. & Niem, T.H. (eds). The Living Marine Resources of the Western Central Pacific. FAO Species Identification Guide for Fisheries Purposes. Rome : FAO Vol. 4 pp. 2069-2790. (as Epinephelus ergastularius)

Pollard, D. & Rhodes, K. 2008. Hyporthodus ergastularius. The IUCN Red List of Threatened Species. Version 2014.3. . Downloaded on 20 May 2015.

Randall, J.E. & P.C. Heemstra. 1991. Revision of Indo-Pacific groupers (Perciformes: Serranidae: Epinephelinae), with descriptions of five new species. Indo-Pacific Fishes (20): 332 pp. (as Epinephelus ergastularius)

Randall, J.E., Hoese, D.F. & Last, P.R. 1993. On the status of the Australian serranid fishes Epinephelus ergastularius Whitley and E. thompsoni Whitley. Records of the Australian Museum 45: 25-31. (as Epinephelus ergastulariusPDF Open access

Whitley, G.P. 1930. Additions to the checklist of the fishes of New South Wales No. 3. The Australian Zoologist 6(2): 117-123, fig. 14. (as Epinephelus ergastularius)

Yearsley, G.K., Last, P.R. & Ward, R.D. (eds) 1999. Australian Seafood Handbook. Hobart : CSIRO Marine Research 460 pp. (as Epinephelus ergastularius)

Quick Facts


CAAB Code:37311147

Biology:Hermaphrodite

Conservation:IUCN Least Concern

Depth:7-400 m

Fishing:Commercial, recreational fish

Habitat:157 cm TL; 66 kg

Max Size:Reef associated

Native:Endemic

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CAAB distribution map