Gymnocranius griseus
| Gymnocranius griseus | |
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Acanthuriformes |
| Family: | Lethrinidae |
| Genus: | Gymnocranius |
| Species: | G. griseus
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| Binomial name | |
| Gymnocranius griseus | |
| Synonyms[2] | |
Gymnocranius griseus, the grey large-eye bream, barred large-eye bream, grey emperor, grey seabream and naked-head seabream, is a species of marine ray-finned fish belonging to the family Lethrinidae, the emperors and emperor breams. This species is found in the Indian and Pacific Oceans.
Taxonomy
[edit]Gymnocranius griseus was first formally described as Dentex grisues by Coenraad Jacob Temminck and Hermann Schlegel with its type locality given as the southwestern coast of Japan.[3] Some authors place the genus Gymnocranius in the subfamily Monotaxinae but the 5th edition of Fishes of the World does not recognise the subfamilies traditionally accepted within the family Lethrinidae as valid. The family Lethrinidae is classified by the 5th edition of Fishes of the World as belonging to the order Spariformes.[4]
Etymology
[edit]Gymnocranius griseus has the specific name griseus which means "grey", Temminck and Schlegel described the fish as having a "very pale bluish grey" colour in life.[5]
Description
[edit]Gymnocranius griseus has its dorsal fin supported by 10 spines and 10 soft rays while the anal fin has 3 spines and 9 or 10 soft rays.[2] It has an oblong shaped body with a depth which fits into its standard length between 1.9 and 2.3 times. The snout is pointed and the front of the jaw has three pairs of canine like teeth, with the other teeth being bristle-like, although they become more conical along the sides. The caudal fin is moderately forked and has pointed tips to its lobes.[6] This is a silvery coloured bream with between5 and 8 slender black vertical bars on the flanks with the first running through the eye and across the cheek.[7] This species has a maximum published total length of 35 cm (14 in), although 25 cm (9.8 in) is more typical.[2]
Distribution and habitat
[edit]Gymnocranius griseus is found in the Western Pacific Ocean from southern Japan south into the Malay Archipelago and from western Australia east to the Marianas Islands. It has been claimed from the Indian Ocean but these records are likely to be misidentifications of G. grandoculis.[1] This species is found in inshore waters at depths greater than 20 m (66 ft) in sheltered bays and on sand and mud slopes. Juveniles are occasionally found on algal reefs in brackish estuaries.[2]
References
[edit]- ^ a b Carpenter, K.E.; Lawrence, A. & Myers, R. (2016). "Gymnocranius griseus". IUCN Red List of Threatened Species. 2016: e.T16719651A16722295. doi:10.2305/IUCN.UK.2016-3.RLTS.T16719651A16722295.en. Retrieved 29 November 2023.
- ^ a b c d Froese, Rainer; Pauly, Daniel (eds.). "Gymnocranius griseus". FishBase. October 2023 version.
- ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Gymnocranius". Catalog of Fishes. California Academy of Sciences. Retrieved 29 November 2023.
- ^ 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.
- ^ "Order SPARIFORMES: Families LETHRINIDAE, NEMIPTERIDAE and SPARIDAE". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf. 17 October 2022. Archived from the original on 30 October 2023. Retrieved 29 November 2023.
- ^ Kent E. Carpenter; Gerald R. Allen (1989). Emperor fishes and large-eye breams of the world (Family Lethrinidae). An annotated and illustrated catalogue of lethrinid species known to date (PDF). FAO Species Catalogue. Vol. 9. FAO, Rome. pp. 29–30.
- ^ Dianne J. Bray. "Gymnocranius griseus". Fishes of Australia. Museums Victoria. Retrieved 29 November 2023.
External links
[edit]- Photos of Gymnocranius griseus on Sealife Collection
- Grey Seabream @ Fishes of Australia