Biology:St. Helena white seabream

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Short description: Species of fish

St. Helena white seabream
Diplodus sargus helenae.jpg
St. Helena white seabream
(Diplodus helenae)
Scientific classification edit
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Spariformes
Family: Sparidae
Genus: Diplodus
Species:
D. helenae
Binomial name
Diplodus helenae
(Sauvage, 1879)
Synonyms[1]
  • Sargus helenae Sauvage, 1879
  • (Sauvage, 1879) Diplodus sargus helenae

The St. Helena white seabream (Diplodus helenae) is a species of marine ray-finned fish belonging to the family Sparidae, which includes the seabreams and porgies. This fish is endemic to the island of Saint Helena in the southern Atlantic.

Taxonomy

The St. Helena white seabream was first formally described as Sarus helenae in 1879 by the French zoologist Henri Émile Sauvage with its type locality given as Saint Helena Island. This species was previously considered a subspecies of the sargo (D. sargus) but is now considered to be a valid species.[2] The genus Diplodus is placed in the family Sparidae within the order Spariformes by the 5th edition of Fishes of the World.[3] Some authorities classify this genus in the subfamily Sparinae,[4] but the 5th edition of Fishes of the World does not recognise subfamilies within the Sparidae.[3]

Etymology

The St. Helena white seabream has the specific name helenae which means "of Helena", a reference to the type locality.[5]

Description

The St. Helena white seabream has a row of 8 incisor-like teeth in the upper jaw with more than a single row of small well-developed molar-like teeth behind them. The dorsal fin is supported by 11 or 12 spines and there are between 57 and 71 lateral line scales. The blotch on the caudal peduncle is saddle shaped.[6] This species has a maximum published total length of 31 cm (12 in), although 20 cm (7.9 in) is more typical.[1]

Distribution and habitat

The St. Helena white seabream is endemic to the waters around Saint Helena in the southern central Atlantic. Here it is found at depths between 5 and 15 m (16 and 49 ft) in areas of rock mixed with sand.[7]

References

  1. ↑ 1.0 1.1 Froese, Rainer and Pauly, Daniel, eds. (2023). "Diplodus\helenae {{{2}}}" in FishBase. October 2023 version.
  2. ↑ Eschmeyer, William N.; Fricke, Ron; van der Laan, Richard, eds. "Species in the genus Diplodus". California Academy of Sciences. http://researcharchive.calacademy.org/research/ichthyology/catalog/fishcatget.asp?tbl=species&genus=Diplodus. 
  3. ↑ 3.0 3.1 Nelson, J.S.; Grande, T.C.; Wilson, M.V.H. (2016). Fishes of the World (5th ed.). Hoboken, NJ: John Wiley & Sons. pp. 502-506. doi:10.1002/9781119174844. ISBN 978-1-118-34233-6. OCLC 951899884. 
  4. ↑ Parenti, P. (2019). "An annotated checklist of the fishes of the family Sparidae". FishTaxa 4 (2): 47-98. https://fishtaxa.com/menuscript/index.php/ft/article/view/49/52. 
  5. ↑ Christopher Scharpf (12 January 2024). "Order ACANTHURIFORMES (part 6): Families GERREIDAE, LETHRINIDAE, NEMIPTERIDAE and SPARIDAE". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf. https://etyfish.org/acanthuriformes6/. 
  6. ↑ Kent E. Carpenter (2016). "Sparidae". The living marine resources of the Eastern Central Atlantic Volume 2 Bony fishes part 2 (Perciformes to Tetradontiformes) and Sea turtles. FAO Species Identification Guide for Fishery Purposes. Rome: FAO. pp. 2567-2620. ISBN 978-92-5-109267-5. https://www.fao.org/3/i5715e/i5715e.pdf. 
  7. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named iucn


Wikidata ☰ Q46641702 entry



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