Epinephelus flavocaeruleus

Epinephelus flavocaeruleus, commonly called blue-and-yellow grouper, is a species of marine ray-finned fish, a grouper from the subfamily Epinephelinae which is part of the family Serranidae, which also includes the anthias and sea basses. It is associated with reefs in the Indian Ocean.

Epinephelus flavocaeruleus
juvenile
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Serranidae
Subfamily: Epinephelinae
Genus: Epinephelus
Species:
E. flavocaeruleus
Binomial name
Epinephelus flavocaeruleus
(Lacepède, 1802)
Synonyms[2]
  • Holocentrus flavocaeruleus Lacepède, 1802
  • Epinephelus flavo-caeruleus (Lacepède, 1802)
  • Serranus flavocaeruleus (Lacepède, 1802)
  • Bodianus macrocephalus Lacepède, 1802
  • Holocentrus gymnosus Lacepède, 1802
  • Holocentrus caerulescens Shaw, 1803
  • Serranus borbonicus Quoy & Gaimard, 1824
  • Perca flavopurpurea Bennett, 1830

Description

Epinephelus flavocaeruleus is a middle sized fish, it can grow up to a maximum length of 90 cm[3] but average size is usually around 45 cm.[4] It has a deep and compressed body, the standard length being 2.3 to 2.7 times its depth. The preopercle is subangular with enlarged serrations at its angle. The upper edge of the gill cover is straight or slightly convex.[5] The dorsal fin contains 9 spines and 16-17 soft rays while the anal fin has 3 spines and 8 soft rays,[2] there are no incisions in the membranes between the dorsal fin spines. The caudal fin is truncate. The head and body are dark bluish violet to dark greyish blue, there are sometimes pale blue flecks while the fins and jaws are bright yellow> In some fish the corners of caudal fin, the margin of the soft-rayed part of the dorsal and the anal fins as well as the tips of pelvic fins are blackish. The yellow colour fades as the fish grows and the larger adults are normally dark greyish, dark blue, purple, reddish brown, or nearly black.[5]

Distribution

Epinephelus flavocaeruleus is widespread throughout the tropical waters of the Indian Ocean. Along the eastern coast of Africa from Djibouti to Port Alfred east to Sumatra. It has been recorded around St Brandon and Rodrigues in the Mascarenes and as far north as the Gulf of Mannar in India. Although it is found in the Gulf of Aden it is absent from the Red Sea and the Persian Gulf.[1]

Habitat and biology

Epinephelus flavocaeruleus is solitary and sedentary, defending a well bounded territory. The juveniles are found in shallow reefs whereas the adults occur on deeper reefs to 150 metres (490 ft)[6] This predatory species feeds on fishes, crabs, shrimps, spiny lobsters, squids, and small octopuses.[2]

Taxonomy

Epinephelus flavocaeruleus was first formally described as Holocentrus flavocaeruleus in 1802 by the French naturalist Bernard Germain de Lacépède (1756-1825) with the type locality given as Mauritius.[7]

Utilisation

Epinephelus flavocaeruleus is landed on Réunion as part of the mixed grouper fishery there, in the Maldives it is captured for export to the Hong Kong live reef fish market.[1]

References
  1. Samoilys, M. (2018). "Epinephelus flavocaeruleus". IUCN Red List of Threatened Species. 2018: e.T132726A100545091. doi:10.2305/IUCN.UK.2018-2.RLTS.T132726A100545091.en. Retrieved 5 July 2020.
  2. Froese, Rainer and Pauly, Daniel, eds. (2019). "Epiephelus flavocaeruleus" in FishBase. December 2019 version.
  3. Heemstra, P.C. & J.E. Randall (1986). "Serranidae". In M.M. Smith & P.C. Heemstra (eds.). Smiths' sea fishes. Springer-Verlag, Berlin. pp. 509–537.
  4. Bouhlel, M. (1988). Poissons de Djibouti. RDA International, Inc. Placerville (California, USA). p. 416.
  5. Heemstra, P.C. & J.E. Randall (1993). FAO Species Catalogue. Vol. 16. Groupers of the world (family Serranidae, subfamily Epinephelinae). An annotated and illustrated catalogue of the grouper, rockcod, hind, coral grouper and lyretail species known to date (PDF). FAO Fish. Synopsis. 125 (16). FAO, Rome. pp. 154–155. ISBN 92-5-103125-8.
  6. Allen, G.R. & M.V. Erdmann (2012). Reef fishes of the East Indies. Universitiy of Hawai'i Press, Volumes I-III. Tropical Reef Research.
  7. Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Holocentrus flavocaeruleus". Catalog of Fishes. California Academy of Sciences. Retrieved 5 July 2020.
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