Smooth grouper

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Smooth grouper
Dermatolepis striolata.png
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Serranidae
Subfamily: Epinephelinae
Genus: Dermatolepis
Species:
D. striolata
Binomial name
Dermatolepis striolata
(Playfair, 1867)
Synonyms [2]
  • Serranus striolatusPlayfair, 1867
  • Serranus gibbosus Boulenger, 1888
  • Dermatolepis aldabrensis J.L.B. Smith, 1955

The smooth grouper (Dermatolepis striolata) 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 and is found in the western Indian Ocean.

Contents

Description

The smooth grouper has a body which is at 2.4-2.6 times as deep as its standard length [3] The eye has a diameter which is markedly shorter than the length of the snout. The preopercle is serrated with the serrations covered by skin. The spines on the gill cover are not easy to see. The dorsal profile of the head is slightly concave or straight. The caudal fin is rounded or truncate with rounded corners. It has smooth scales which are largely covered by skin and auxiliary scales. There are 11 spines and 18-19 soft rays in the dorsal fin while the anal fin has 3 spines and 9-10 soft rays. [2] The colour of this fish is overall yellowish to reddish brown, becoming paler ventrally. The adults have small, round, dark spots covering the head, body and fins. The juveniles have many small dark brown spots on the head, body and fins, the spots on the body are elongated horizontally while those on the fins are less obvious. The dorsal, anal and caudal fin also have pale spots and there are also pale, irregular blotches of various sizes which vary on visibility too. [3] This species attains a maximum total length of 85 centimetres (33 in) and the maximum published weight is 10.5 kilograms (23 lb). [2]

Distribution

The smooth grouper is found in the western Indian Ocean. Along the African coast its distribution extends from Somalia to Durban in South Africa. It is also found around the Comoros Islands, Madagascar and Aldabra in the Seychelles. It is also found around the southern Arabian Peninsula as far east as the Iranian waters of the Gulf of Oman.It has also been reported from the Red Sea. [1]

Habitat and biology

The smooth grouper is a rare species found on the shallow waters of sheltered, turbid coastal rocky or coral reefs. They have been reported to shoal in small in small groups of up to 8 fishes. Analysis of stomach contents show that they are piscivorus. [2] It is not known whether they form aggregations for spawning. [1]

Taxonomy

The smooth grouper was first formally described as Serranus striolatus in 1867 by the Scottish soldier, diplomat, naturalist and author Lambert Playfair (1828-1899) with the type locality given as Zanzibar. [4]

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References

  1. 1 2 3 Barreiros, J. (2018). "Dermatolepis striolata". IUCN Red List of Threatened Species . 2018: e.T44672A100459401. doi: 10.2305/IUCN.UK.2018-2.RLTS.T44672A100459401.en . Retrieved 15 November 2021.
  2. 1 2 3 4 Froese, Rainer; Pauly, Daniel (eds.) (2019). "Dermatolepis striolata" in FishBase. December 2019 version.
  3. 1 2 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. Vol. 125. FAO, Rome. p. 68. ISBN   92-5-103125-8.
  4. ↑ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Serranus striolatus". Catalog of Fishes . California Academy of Sciences . Retrieved 22 June 2020.
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