Morphology
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الإنجليزية
)
المقدمة من Fishbase
Dorsal spines (total): 11; Dorsal soft rays (total): 23 - 26; Analspines: 2; Analsoft rays: 7
- Recorder
- Cristina V. Garilao
Trophic Strategy
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الإنجليزية
)
المقدمة من Fishbase
Occurs inshore (Ref. 75154).
- Recorder
- Auda Kareen Ortañez
Biology
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الإنجليزية
)
المقدمة من Fishbase
Found in shallow coastal waters and estuaries (Ref. 9772).
- Recorder
- Estelita Emily Capuli
Importance
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الإنجليزية
)
المقدمة من Fishbase
fisheries: minor commercial; price category: medium; price reliability: very questionable: based on ex-vessel price for species in this family
- Recorder
- Estelita Emily Capuli
分布
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الإنجليزية
)
المقدمة من The Fish Database of Taiwan
分布於印度-西太平洋區，西起巴基斯坦東部，東至菲律賓，北至台灣海峽，南迄澳洲昆士蘭。台灣分布於西部、南部及澎湖較多。
利用
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الإنجليزية
)
المقدمة من The Fish Database of Taiwan
是台灣拖網漁業之漁獲物之一，但數量不多。肉質佳，糖醋、清蒸皆宜。
描述
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الإنجليزية
)
المقدمة من The Fish Database of Taiwan
體延長，側扁。吻圓突；口裂小，下位，幾水平，上頜長於下頜，上頜後緣伸達瞳孔中央下方；上頜前端齒列較多，最外列齒稍擴大，內列齒細小，下頜前端齒列較多，齒細小而呈絨毛狀；吻緣孔5個，沿吻緣葉側裂，吻緣在內、外側緣孔處凹入成深缺刻，把吻緣葉分成5片狀；吻上孔5個，中央3孔圓而大，呈弧形排列，左右側各有一外側上孔；頦部有一短小頦鬚，頦孔為似5孔型，沿下頜呈弧形排列，中央頦孔隔成2孔。鼻孔2個，圓形，後孔幾為前孔2倍大。眼眶下緣距前上頜骨水平線有一眼徑的距離。前鰓蓋後緣具鋸齒，鰓蓋具2扁棘；具擬鰓，鰓耙短小。頭至尾、背鰭軟條部、臀鰭及尾鰭皆被圓鱗。耳石為叫姑魚型，印跡頭區半圓形，尾端擴大為圓錐形。背、腹鰭起點約相對；背鰭棘部帆形，第II-IV棘皆很長，以第II棘最長；胸鰭基上緣點在背、腹鰭起點及鰓蓋的後緣前；
尾鰭楔形。腹腔膜有淺褐色細斑，胃為卜字形，幽門垂9個，腸為2次迴繞；鰾為叫姑魚型，前端呈左右突球狀，附枝14-16對，第一對伸入頭區。體上半部黑褐色，下半部深褐色有銀白光，鰭皆深褐色，尾鰭末稍黑色；鰓蓋青紫色，在2扁棘間有一不顯之暗斑；鰓腔淺褐色；口腔粉紅色。
棲地
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الإنجليزية
)
المقدمة من The Fish Database of Taiwan
主要棲息於沿岸砂泥底質水域，大多棲息於淺水域，水深約在1-40公尺之間，會進入河口區。一般在底層活動覓食，肉食性，以底棲生物為食。夜行性。
Johnius amblycephalus
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الإنجليزية
)
المقدمة من wikipedia EN
Johnius amblycephalus, the bearded croaker, also known as the green-backed croaker or sharp-nosed jewfish, is a marine ray-finned fish belonging to the family Sciaenidae, the drums and croakers. This fish is found in the Indian and Pacific Oceans.
Taxonomy
Johnius amblycephalus was first formally described as Umbrina amblycephala in 1855 by the Dutch physician, herpetologist and ichthyologist Pieter Bleeker with its type locality given as Ambon Island. Bleeker's name replaced Umbrina dussumieri which had been coined by Achille Valenciennes in 1833 but which was invalid as it was preoccupied by Georges Cuvier's 1830 Corvina dussumieri.[3] This species is classified within the nominate subgenus of Johnius.[4] This species has been placed in the subfamily Otolithinae by some workers,[5] but the 5th edition of Fishes of the World does not recognise subfamilies within the Sciaenidae which it places in the order Acanthuriformes.[6]
Etymology
Johnius amblycephalus has a specific name, amblycephalus, which means "blunt head" and this is an allusion to its relatively blunt snout in comparison to Johnius dussumieri.[7]
Description
Johnius amblycaphalus has its dorsal fin supported by a total of 11 spines and between 23 and 26 soft rays while the anal fin is supported by 2 spines and 7 soft rays.[2] The second to the fifth spines in the first dorsal fin are elongated. The rear edge of the caudal fin can be truncate, rhomboidal or s-shaped. The chin has a single thick, blunt barbel. The overall colour is black or dark brown on the back and whitish or pale yellow on the sides and belly. The spiny dorsal fin is black towards its margin.[4] This species has a maximum published total length of 25 cm (9.8 in) , although 15 cm (5.9 in) is more typical.[2]
Distribution and habitat
Johnius amblycephalus is found in the Indo-Pacific region where it occurs from the Persian Gulf to Papua New Guinea, north to southern China and Taiwan and south to Australia.[1] Its presence off Africa is unconfirmed and may be confusion with Johnius fuscolineatus.[2] It is found at depths between 0 and 28 m (0 and 92 ft) in shallow coastal waters and estuaries where there are sand, mud or muddy sand substrates as well as among soft corals, sponges, antipathrians, and algae.[1]
References
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^ a b c Nguyen Van, Q.; Sasaki, K.; Hoshino, K.; et al. (2020). "Johnius amblycephalus". IUCN Red List of Threatened Species. 2020: e.T49173495A49230902. doi:10.2305/IUCN.UK.2020-1.RLTS.T49173495A49230902.en. Retrieved 15 May 2023.
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^ a b c d Froese, Rainer; Pauly, Daniel (eds.) (2023). "Johnius amblycephalus" in FishBase. February 2023 version.
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^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Johnius". Catalog of Fishes. California Academy of Sciences. Retrieved 15 May 2023.
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^ a b Kunio Sasaki (2022). "Family Sciaenidae Croakers, Drums and Cobs". In Phillip C Heemstra; Elaine Heemstra; David A Ebert; Wouter Holleman; John E Randall (eds.). Coastal Fishes of the Western Indian Ocean Volume 3 (PDF). South African Institute for Aquatic Biodiversity. pp. 389–414. ISBN 978-1-990951-30-5.
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^ Kunio Sasaki (1989). "Phylogeny of the family Sciaenidae, with notes on its Zoogeography (Teleostei, Peciformes)" (PDF). Memoirs of the Faculty of Fishes Hokkaido University. 36 (1–2): 1–137.
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^ 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.
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^ Christopher Scharpf & Kenneth J. Lazara, eds. (9 March 2023). "Series Eupercaria (Incertae sedis): Families Callanthidae, Centrogenyidae, Dinopercidae, Emmelichthyidae, Malacanthidae, Monodactylidae, Moronidae, Parascorpididae, Sciaenidae and Sillagidae". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 15 May 2023.
Johnius amblycephalus: Brief Summary
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الإنجليزية
)
المقدمة من wikipedia EN
Johnius amblycephalus, the bearded croaker, also known as the green-backed croaker or sharp-nosed jewfish, is a marine ray-finned fish belonging to the family Sciaenidae, the drums and croakers. This fish is found in the Indian and Pacific Oceans.
Description
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الإنجليزية
)
المقدمة من World Register of Marine Species
Found in shallow coastal waters and estuaries (Ref. 9772). Feeds on small fishes and invertebrates. A food fish. Sold fresh and dried salted in markets.
Froese, R. & D. Pauly (Editors). (2023). FishBase. World Wide Web electronic publication. version (02/2023).
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