Erythrocles

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Erythrocles
Erythrocles schlegelii 2.jpg
Japanese rubyfish (E. schlegelii)
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Acanthuriformes
Family: Emmelichthyidae
Genus: Erythrocles
D. S. Jordan, 1919
Type species
Emmelichthys schlegelii
Synonyms [1]

Erythrocles is a genus of marine ray-finned fishes belonging to the family Emmelichthyidae, the rovers, bonnetmouths or rubyfishes. The fishes in this genus are found in the western Atlantic, Pacific and Indian Oceans.

Contents

Taxonomy

Erythrocles was first proposed as a genus name in 1919 by the American ichthyologist David Starr Jordan as a replacement for Erythtichthys, a name proposed by Coenraad Jacob Temminck and Hermann Schlegel in 1845 but which was preoccupied by a name proposed by Charles Lucien Bonaparte in 1831 as an unnecessary replacement for the trahira genus Erythrinus Scopoli, 1777. Temminck and Schlegel did not add any species to the genus they described but John Richardson added one, Emmelichthys schlegelii, in 1846. In 1919 Jordan published his replacement name and confirmed Richardson's E. schlegelii as the type species. [1] The genus is classified in the small family Emmelichthyidae which is included in the order Acanthuriformes. [2]

Species

There are currently six recognized species in this genus: [3]

Characteristics

Erythrocles rubyfishes have an oblong body that has a depth of one-fifth to one-third of its standard length and which is less than the length of the head. The dorsal fin is incised to its base immediately before the last dorsal fin spine. The first dorsal fin contains 10 spines with the second dorsal fin having a single spine and between 10 and 12 soft rays. [4] The anal fin has 2 or 3 spines and 9 or 10 soft rays. [5] The final 2 rays of dorsal and anal fins are elongated, notably longer than the ray immediately in front of them and largely enclosed in a sheath covered in scales. The lower margin of the preorbital bone is smooth or may have tiny serrations. [4] The largest species is the Japanese rubyfish (E. schlegelii) with a maximum published total length of 72 cm (28 in) while the smallest is E. acarina which has a maximum published standard length of 8.9 cm (3.5 in). [3]

Distribution

Erythrocles rubyfishes are found in the eastern and western central Atlantic, the Indian and the western and central Pacific Oceans.

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References

  1. 1 2 3 Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Emmelichthyidae". Catalog of Fishes . California Academy of Sciences . Retrieved 12 April 2023.
  2. ↑ J. S. Nelson; T. C. Grande; M. V. H. Wilson (2016). Fishes of the World (5th ed.). Wiley. pp. 497–502. ISBN   978-1-118-34233-6.
  3. 1 2 Froese, Rainer and Pauly, Daniel, eds. (2023). Species of Erythrocles in FishBase . February 2023 version.
  4. 1 2 Philip C. Heemstra (2022). "Family Emmelichthyidae, Rovers". In P.C. Heemstra; et al. (eds.). Coastal fishes of the western Indian Ocean. Volume 4 (PDF). South African Institute for Aquatic Biodiversity. pp. 25–28. ISBN   978-1-990951-31-2.
  5. ↑ "Genus: Erythrocles, Crimson Rover, Rovers". Shorefishes of the Greater Caribbean online information system. Smithsonian Tropical Research Institute. Retrieved 12 April 2023.
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