A review of the Acanthopagrus bifasciatus species complex (Pisces: Sparidae) from the Indian Ocean, with redescriptions of A. bifasciatus (Forsskål 1775) and A. catenula (Lacepède 1801) YUKIO IWATSUKI (Japan) &amp; PHILLIP C. HEEMSTRA (South Africa)

YUKIO IWATSUKI; PHILLIP C. HEEMSTRA

doi:10.11646/zootaxa.3025.1.2

Issue: Vol. 3025 No. 1: 14 Sep. 2011

Type: Articles

Published: 2011-09-14

DOI: 10.11646/zootaxa.3025.1.2

Page range: 38–50

Abstract views: 85

PDF downloaded: 2

A review of the Acanthopagrus bifasciatus species complex (Pisces: Sparidae) from the Indian Ocean, with redescriptions of A. bifasciatus (Forsskål 1775) and A. catenula (Lacepède 1801) YUKIO IWATSUKI (Japan) & PHILLIP C. HEEMSTRA (South Africa)

YUKIO IWATSUKI⁺⁻
PHILLIP C. HEEMSTRA⁺⁻

Laboratory of Fisheries Sciences, Department of Marine Biology & Environmental Sciences, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuen-kibanadai-nishi, Miyazaki 889-2192, Japan

South African Institute for Aquatic Biodiversity, Private Bag 1015, Grahamstown 6140, South Africa.

Fish Pisces Perciformes Sparidae Taxonomy Acanthopagrus bifasciatus Acanthopagrus catenula

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Abstract

The Doublebar Seabream, Acanthopagrus bifasciatus (Forsskål 1775) with two conspicuous vertical black bars across the head has long been recognized as a distinctive species from the Red Sea and Western Indian Ocean. Two distinct colour patterns are associated with two allopatric populations except southern Oman and Somalia which appears to be a zone of overlap: a northern population (Red Sea, through Persian Gulf, to Pakistan) with dorsal and caudal fins immaculate yellow; and a southern population (east coast of Africa from the Horn of Africa to South Africa, Madagascar, and Mascarene Islands) having the dorsal fin with a wide black margin and caudal fin rear margin with a narrow black edge (and both black margins disappearing with growth in specimens over 30 cm SL). Both populations resulted in the two valid species: A. bifasciatus for the northern population and A. catenula (Lacepède 1801) for the southern population. Nominal species (junior synonyms) of the two species are discussed.

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