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Taxon profile

species

Darwin Grouper
Hyporthodus darwinensis (Randall & Heemstra, 1991)

kingdom Animalia - animals »  phylum Chordata - chordates »  class Actinopterygii - ray-finned fishes »  order Perciformes - perch-likes »  family Serranidae - sea basses and groupers »  genus Hyporthodus

Scientific synonyms

Epinephelus darwinensis Randall & Heemstra, 1991

Data Deficient DD

Description

Body depth contained 2.8 times in standard length (holotype 535 mm standard length). Head length contained 2.6 times in standard length); interorbital area convex; dorsal head profile almost straight; preopercle angle rounded, with a shallow indentation above angle and no enlarged serrae; upper edge of operculum straight; maxilla reaching almost to vertical at rear edge of eye; posterior nostrils 2.5 times larger than anterior nostrils; maxilla rounded posteriorly, with a prominent angle (hidden by lower lip) on lower edge; anterior canines in jaws small; midlateral part of lower jaw with 3 or 4 rows of small teeth. Gill rakers 9 on upper limb, 16 on lower limb; longest gill raker (first on lower limb next to raker at angle) shorter than longest gill filaments; small bony platelets present on side of first gill arch. Dorsal fin with XI spines and 16 rays, the third spine longest, twice length of last spine, distinctly longer than longest rays and contained 2.9 times in head length; interspinous dorsal-fin membranes moderately incised; anal fin with III spines and 8 rays; pectoral-fin rays 18; pectoral fins equal to pelvic fins, their length contained 2.35 times in head length; caudal fin truncate. Lateral-body scales ctenoid, with numerous auxiliary scales; lateral-line scales 71; lateral-scale series 147.
Colour: Yellowish brown, shading to yellowish ventrally; small faint irregular pale spots scattered over head and body; dorsal and caudal fins yellowish brown, the caudal with a black posterior margin; soft dorsal and anal fins with traces of a white line along distal margin; pectoral and pelvic fins blackish distally.

Distribution

Known from a single specimen caught off the north coast of Australia and landed at Darwin.

Ecology

Depth of capture 107 m.

Size

53,5 cm standard length, 62 cm total length.

Taxonomy

The affinities of this species are unclear.

Sources

Food and Agriculture Organization of the United Nations, 1993, Heemstra, P.C.; Randall, J.E., FAO species catalogue. Vol. 16. Groupers of the world (Family Serranidae, Subfamily Epinephelinae). An annotated and illustrated catalogue of the grouper, rock cod, hind, coral grouper and lyretail species known to date.
Author: Petr Čech

Links and literature

CH DE EN FR IT NL PR SP FishBase [7339]

Froese R., Pauly D. (eds.): FishBase [http://www.fishbase.org]
CZ AQUATAB. World Wide Web electronic publication [species/8457]

Plíštil J. (Ed.) (2009): AQUATAB. World Wide Web electronic publication [http://aquatab.net] [as Epinephelus darwinensis Randall & Heemstra, 1991]
Data retrieved on: 17 January 2010
EN IUCN Red List of Threatened Species 2018-1 [64399]

IUCN Red List of Threatened Species [http://www.iucnredlist.org/] [as Hyporthodus darwinensis (Randall & Heemstra, 1991)]
Data retrieved on: 3 September 2019
CZ Hanel L., Plíštil J., Novák J. (2011): České názvy živočichů V. Ryby a rybovití obratlovci (Pisces). 7. Paprskoploutví (Actinopterygii) Kostnatí (Neopterygii) [Ropušnicotvaří (Scorpaeniformes) – ostnoploutví (Perciformes) – Percoidei], Národní muzeum (zoologické oddělení), Praha, 148 str. [as Epinephelus darwinensis Randall & Heemstra, 1991]
Data retrieved on: 19 August 2019

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