Chrysoblephus laticeps
in False Bay, South Africa
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Spariformes
Family: Sparidae
Genus: Chrysoblephus
Species:
C. laticeps
Binomial name
Chrysoblephus laticeps
(Valenciennes, 1830)
Synonyms[2]
  • Chrysoblephus algoensis (Castelnau, 1861)
  • Chrysophrys algoensis Castelnau, 1861
  • Chrysophrys laticeps Valenciennes, 1830
  • Chrysophrys pugicephalus Gilchrist & W. W. Thompson, 1909

Chrysoblephus laticeps, the red roman or roman seabream, is a species of marine ray-finned fish belonging to the family Sparidae, the seabreams and porgies. This fish is endemic to Southern Africa, ranging from Namibia to the Eastern Cape.

Taxonomy

Chrysoblephus laticeps Was first formally described as Chrysophrys laticeps in 1830 by the French zoologist Achille Valenciennes with its type locality given as the Cape of Good Hope in South Africa.[3] The genus Chrysoblephus is placed in the family Sparidae within the order Spariformes by the 5th edition of Fishes of the World.[4] Some authorities classify this genus in the subfamily Sparinae,[5] but the 5th edition of Fishes of the World does not recognise subfamilies within the Sparidae.[4]

Etymology

Chrysoblephus laticeps has the specific namelaticeps which means "broad head", an allusion to the wide forehead of this species.[6]

Description

Chrysoblephus laticeps has amore ovate body than other Chrysoblephus sea breams, the depth of the body fitting into its standard length between 2.3 and 2.5 times. The dorsal profile of the head slopes gently from the origin of the dorsal fin to the snout, as the fish ages the area in front of the eyes becomes concave. The area between the eyes is wide and also concave. This is a colourful species with the head, body and fins being vivid orange. There is a blue bar between the yes and a white saddle-like mark on the back below the 7th to 9th spines in the dorsal fin. The dorsal fin is supported by 11 or 12 spines and 10 or 11 soft rays while the anal fin contains 3 spines and between 7 and 9 soft rays.[7] The roman has a maximum published total length of 50 cm (20 in), although 32 cm (13 in) is more typical.[8]

Distribution and habitat

Chrysoblephus laticeps is endemic to the waters off Southern Africa in the southeastern Atlantic Ocean and southwestern Indian Ocean from northern Namibia to Durban in KwaZulu-Natal. Records from southern Madagascar and Mauritious are considered to be dubious.[7] It is found at depths between 0 and 100 m (0 and 328 ft) on inshore and offshore reefs with elevated topography in deep water.[1]

Biology

Crysoblephus laticeps is a protogynous hermaphrodite, the mature females transform into territorial males upon further growth.[9] The species forms pairs before an elaborate courtship ritual and spawning, the eggs being released well above the seafloor.[10]

South African research shows that individuals occupy a territory ranging of 1,000–3,000 square metres (11,000–32,000 sq ft), and that the extent is independent of fish size or habitat quality. These small home ranges suggest that dispersal of the species is mainly by planktonic larvae. Activity is markedly reduced during the night, and when cold-water upwelling occur, fish seek the shelter of caves. Over the spawning period, females wander beyond their normal home boundaries.[11]

Fisheries

Crysoblephus laticeps is sought after by line fishers, operating from the shore or from boats within the inshore zone. Linefishing is the least destructive fishing method, having little impact when carried out with rod and reel or a handline. Other methods, such as spearfishing, lead to overfishing and a population decline in areas such as Port Elizabeth and False Bay. Its slow growth renders the species particularly vulnerable. There is evidence of some recovery of numbers within Marine Protected Areas.[12]

References

  1. 1 2 Mann, B.Q.; Buxton, C.D. & Carpenter, K.E. (2014). "Chrysoblephus laticeps". IUCN Red List of Threatened Species. 2014: e.T170170A1286872. doi:10.2305/IUCN.UK.2014-3.RLTS.T170170A1286872.en. Retrieved 20 November 2021.
  2. ↑ Nicolas Bailly (2012). Bailly N (ed.). "Chrysoblephus laticeps (Valenciennes, 1830)". FishBase. World Register of Marine Species. Retrieved April 16, 2012.
  3. ↑ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Chrysoblephus". Catalog of Fishes. California Academy of Sciences. Retrieved 10 January 2024.
  4. 1 2 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. LCCN 2015037522. OCLC 951899884. OL 25909650M.
  5. ↑ Parenti, P. (2019). "An annotated checklist of the fishes of the family Sparidae". FishTaxa. 4 (2): 47–98.
  6. ↑ "Order SPARIFORMES: Families LETHRINIDAE, NEMIPTERIDAE and SPARIDAE". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf. 22 December 2023. Retrieved 10 January 2024.
  7. 1 2 Yukio Iwatsuki and Phillip C Heemstra (2022). "Family Sparidae". In Phillip C Heemstra; Elaine Heemstra; David A Ebert; Wouter Holleman; and John E Randall (eds.). Coastal Fishes of the Western Indian Ocean (PDF). Vol. 3. South African Institute for Aquatic Biodiversity. pp. 284–315. ISBN 978-1-990951-32-9.
  8. ↑ Froese, Rainer; Pauly, Daniel (eds.) (2023). "Chrysoblephus laticeps" in FishBase. October 2023 version.
  9. ↑ Universal Fish Catalogue Archived 2011-07-20 at the Wayback Machine
  10. ↑ C. D. Buxton (1990). "The reproductive biology of Chrysoblephus laticeps and C. cristiceps (Teleostei: Sparidae)". Journal of Zoology. 220 (3): 497–511. doi:10.1111/j.1469-7998.1990.tb04321.x.
  11. ↑ S. E. Kerwath; A. Götz; C. G. Attwood; W. H. H. Sauer; C. G. Wilke (2007). "Area utilisation and activity patterns of roman Chrysoblephus laticeps (Sparidae) in a small marine protected area". African Journal of Marine Science. 29 (2): 259–270. doi:10.2989/AJMS.2007.29.2.10.193. S2CID 85329872.
  12. ↑ "Red Roman, Chrysoblephus laticeps". The Southern African Sustainable Seafood Initiative. WWF. Retrieved April 16, 2012.
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