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| Kyphosus cinerascens | |
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| Kyphosus cinerascens in the Red Sea | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Centrarchiformes |
| Family: | Kyphosidae |
| Genus: | Kyphosus |
| Species: | K. cinerascens
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| Binomial name | |
| Kyphosus cinerascens Forsskål, 1775
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Kyphosus cinerascens, commonly known as the blue sea chub or blue-bronze chub, is a species of marine ray-finned fish in the family Kyphosidae.[2][3]
Description
[edit]It is characterized by a single continuous dorsal fin with 11 spines and 12–14 soft rays[4], and an anal fin with 3 spines and 11–13 soft rays.[5] Adults can reach up to 45 centimetres (18 in) in length and are typically blue-grey, brown, or black in coloration.[6] The body is relatively deep and oval-shaped, with faint longitudinal lines formed by rows of scales.[6]
Distribution and habitat
[edit]This species occurs throughout the Indo-Pacific region, including the Hawaiian Islands, in tropical and subtropical waters.[2] It is commonly found over hard, algal-covered substrates in exposed reef environments, loagoons, and seaward reefs.[2]
Diet
[edit]Primarily herbivores, they mostly feed on phaeophytes, chlorophytes, and rhodophytes.[5]
Behavior
[edit]This species is generally diurnal and is often observed in schools of 10 or more individuals along reef habitats.[7] At night, individuals are typically observed alone, remaining close to the seafloor, sometimes at depths of 24–45 metres (79–148 ft).[2]
Conservation significance
[edit]'Their grazing activity may contribute to controlling and maintaining reef health.[8]
References
[edit]
- ^ Carpenter, K.E.; Robertson, R.; Pina Amargos, F.; Curtis, M.; Knudsen, S. (2017) [errata version of 2015 assessment]. "Kyphosus cinerascens". IUCN Red List of Threatened Species. 2015 e.T46086162A115392824. doi:10.2305/IUCN.UK.2015-4.RLTS.T46086162A46664684.en. Retrieved 12 November 2022.
- ^ a b c d "Kyphosus cinerascens (Forsskål, 1775)". FishBase. FishBase Consortium. Retrieved 22 April 2026.
- ^ "Family Kyphosidae (sea chubs)". Catalog of Fishes. California Academy of Sciences. Retrieved 25 April 2020.
- ^ Sakai, Keiichi (2006). "Taxonomic review of two Indo-Pacific sea chubs, Kyphosus cinerascens (Forsskål, 1775) and K. sydneyanus (Günther, 1886)". Ichthyological Research. 53 (1): 27–40. doi:10.1007/s10228-006-0355-1. S2CID 25419337.
- ^ a b Clements, K. D.; Choat, J. H. (1997-03-14). "Comparison of herbivory in the closely-related marine fish genera Girella and Kyphosus". Marine Biology. 127 (4): 579–586. doi:10.1007/s002270050048. S2CID 84272086.
- ^ a b "Kyphosus cinerascens". Smithsonian Tropical Research Institute. Retrieved 2023-03-26.
- ^ Collected reprints. National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Southwest Fisheries Center. 1974.
- ^ Randall, John E. (2010). Shore Fishes of Hawaii: Revised Edition. University of Hawaiʻi Press. ISBN 978-0-8248-3427-2.