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Diagnostic Description

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Description: Grey with dusky fins. When small or sub-adult with pale scale centers forming horizontal lines along scale rows. Soft parts of dorsal and anal fins elongated anteriorly, resulting in near vertical rear margins. Snout more angled down compared to other species (Ref. 48636). Head dorsal profile protuberance on anterior of upper side of eye; maxillary reaches to posterior of front of eye. Body depth 2.3-2.8 in SL, HL 3.4-3.7 in SL. Dorsal fin soft rays elevated higher than spines, spinous base longer than soft part, longest spine 1.3-1.7 in longest soft ray (Ref. 90102).
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Recorder
Rodolfo B. Reyes
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Life Cycle

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Oviparous (Ref. 101771).
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Susan M. Luna
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Morphology

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Dorsal spines (total): 11; Dorsal soft rays (total): 11 - 12; Analspines: 3; Analsoft rays: 11 - 12
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Rodolfo B. Reyes
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Trophic Strategy

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Found in aggregations over hard, algal coated bottoms of exposed, surf-swept outer reef flats, lagoon and seaward reefs, to a depth of at least 24 m. Mainly herbivorous, feeding on seaweeds and associated invertebrates (Ref. 30573). Appears to be more commonly involved in hallucinogenic fish poisoning than most other related species (Ref. 4690). Caught with other types of artisanal gear. Minimum depth reported taken from Ref. 30874.
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Pascualita Sa-a
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Biology

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Found in aggregations over hard, algal coated bottoms of exposed, surf-swept outer reef flats, lagoon and seaward reefs, to a depth of at least 24 m (Ref. 30573). Benthopelagic (Ref. 58302). Juveniles associated with floating material (Ref. 58302). Mainly herbivorous, feeding on seaweed and associated invertebrates (Ref. 30573). Appear to be more commonly involved in hallucinogenic fish poisoning than most other related species (Ref. 4690). Caught with other types of artisanal gear. Minimum depth reported taken from Ref. 30874.
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Estelita Emily Capuli
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Importance

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fisheries: minor commercial; price category: high; price reliability: questionable: based on ex-vessel price for species in this genus
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Estelita Emily Capuli
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分布

provided by The Fish Database of Taiwan
分布於印度-太平洋區,自紅海、東非洲至夏威夷群島,北至日本南部,南至澳洲。台灣各岩礁岸均產。
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臺灣魚類資料庫
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利用

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主要漁法為刺網及手釣,定置網亦常有所獲,產量不大,全年皆產。因食物鏈的關係,容易引起食物中毒,故需注意鮮度。肉質極佳,煮薑絲清湯最宜,煎炸食用亦可。
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描述

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體呈長橢圓形,側扁,頭背微凸。頭短,吻鈍,唇較薄。眼中大或小。口小,口裂近水平。上頜骨不為眶前骨所覆蓋。頜齒多行,外行齒呈門齒狀,內行處呈絨毛狀;鋤骨、腭骨和舌上皆具齒。體被中大櫛鱗,不易脫落;頭部被細鱗;吻部無鱗;背鰭、臀鰭及尾鰭基部均具細鱗;側線完全,與背緣平行,側線鱗數50-52(通常為51)。背鰭硬棘X-XI(通常為XI),軟條數12;臀鰭III,軟條數11;背鰭最長軟條長於最長之硬棘;尾鰭叉形。體灰褐色至青褐色,背部顏色較深,腹部顏色較淡,偏銀白色,身上有許多黃色縱斑;眼眶下方具白紋;各鰭色暗。
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棲地

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棲息於面海的岩礁區、海藻床、潟湖或外礁激浪區等,於中表層水域活動,深度由1-24公尺皆可發現。日行性。草食偏雜食性魚類,主要以海藻為主,輔以小型無脊椎動物。
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Kyphosus cinerascens

provided by wikipedia EN

Kyphosus cinerascens spotted near the Maldives

Kyphosus cinerascens is a species of marine ray-finned fish. It is a sea chub from the family Kyphosidae.[2][3] Kyphosus Cinerascens has 11 dorsal fins and 12 anal fins.[4] Kyphosus cinerascens are widely distributed in the Indo-Pacific region.[4] The Kyphosus cinerascens has a strict diet on phaeophytes, chlorophytes, and rhodophytes, making them herbivores.[5]

Description

An adult topsail sea chub grows up to 45 cm long and has a blue/grey, brown or black coloring.[6] They are a pale fish with dark lines that separate the rows of scales.[6]

Distribution & Habitat

The species of sea chub occurs around the Indo-central Pacific and Atlantic Ocean; along several locations near the Greater Caribbean; and some areas in Brazil.[6] The sea chub is regularly found taking residence in areas of aggregations over hard algal coated bottoms of exposed, surf-swept outer reef flats, lagoons, and seaward reefs. They are commonly seen occupying depths of 24 - 45m near these rocky areas.[7] Their habitats are usually seen within the Equatorial, Tropical, and Subtropical climate zones.

Diet

The sea chubs are herbivores that primarily eat phaeophytes, chlorophytes, and rhodophytes.[5]

Behavior

Sea chubs are typically more active during the day where they can be found swimming in schools of 10 or more along the reef, although at night only lone individuals can be found swimming near the sea floor.[8] They are usually found feeding on algae found on rocks and even free-floating algae particles.[8] Meanwhile, their nocturnal habits and behaviors are still unknown despite their common solitary observations.

Conservation Significance

There are five known species of Kyphosus found in Hawai'i, with four being from the drab genus Kyphosus and the other being the Sectator ocyurus.[9] However due to the species of Kyphosus choosing algae as their main source of food, the State of Hawai'i was advised to put this fish species under protective care to help restore the control of nearby algae.[9]

References

Wikispecies has information related to Kyphosus cinerascens.
  1. ^ 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.
  2. ^ Froese, Rainer; Pauly, Daniel (eds.) (2019). "Kyphosus cinerascens" in FishBase. December 2019 version.
  3. ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Kyphosidae". Catalog of Fishes. California Academy of Sciences. Retrieved 25 April 2020.
  4. ^ a b Sakai, Keiichi (2006). "Taxonomic review of two Indo-Pacific sea chubs, Kyphosus cinerascens (Forsskal, 1775) and sydneyanus (Gunter,1886)". Ithylogical Research. doi:10.1007/s10228-006-0355-1. S2CID 25419337. Retrieved April 30, 2022.
  5. ^ 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. ISSN 0025-3162. S2CID 84272086.
  6. ^ a b c "Shorefishes - The Fishes - Species". biogeodb.stri.si.edu. Retrieved 2023-03-26.
  7. ^ "Kyphosus cinerascens, Blue sea chub : fisheries". www.fishbase.se. Retrieved 2023-04-23.
  8. ^ a b Center (U.S.), Southwest Fisheries (1974). Collected Reprints. [National Oceanic and Atmospheric Administration], National Marine Fisheries Service, Southwest Fisheries Center.
  9. ^ a b Randall, John E. (2010-03-31). Shore Fishes of Hawaii: Revised Edition. University of Hawaii Press. ISBN 978-0-8248-3427-2.
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Kyphosus cinerascens: Brief Summary

provided by wikipedia EN
Kyphosus cinerascens spotted near the Maldives

Kyphosus cinerascens is a species of marine ray-finned fish. It is a sea chub from the family Kyphosidae. Kyphosus Cinerascens has 11 dorsal fins and 12 anal fins. Kyphosus cinerascens are widely distributed in the Indo-Pacific region. The Kyphosus cinerascens has a strict diet on phaeophytes, chlorophytes, and rhodophytes, making them herbivores.

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Description

provided by World Register of Marine Species
Found in aggregations over hard, algal coated bottoms of exposed, surf-swept outer reef flats, lagoon and seaward reefs, to a depth of at least 24 m. Appears to be more commonly involved in hallucinogenic fish poisoning than most other related species (Ref. 4690). Rare in Hawaii. Feeds on algae and invertebrates (Ref. 5213). Caught with other types of artisanal gear.

Reference

Froese, R. & D. Pauly (Editors). (2023). FishBase. World Wide Web electronic publication. version (02/2023).

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