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Diagnostic Description

provided by Fishbase
Body with alternating broad red and narrower silvery white stripes (Ref. 4201); red head with 2 vertical white streaks on the opercle, one on its edge and an oblique one below the eye; distinctive reddish-black to black dorsal fin with two white streaks. Five or 6 oblique rows of scales on cheek. Maxilla nearly reaching or extending slightly beyond a vertical at anterior edge of the pupil; upper jaw length 2.75-2.95 in head length. Body depth 2.75-3.25 in SL; head length 2.7-3.15 in SL; snout length 4.0-4.4 in head length; interorbital width 4.4-4.9 in head length; premaxillary groove extending slightly posterior to a vertical at anterior edge of orbit; anterior end of nasal bone rounded; medial margin of nasal bone without spinule; nasal fossa without spinules on its edge; upper edge of suborbital bones below anterior half of eye spineless; small preopercular spine, its length 2-3 times in orbit diameter, 2.85-3.5 in head length; longest 4th dorsal spines, 1.7-2.25 in head length; third anal spine 1.2-1.35 in head length (Ref. 27370).
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Recorder
Cristina V. Garilao
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Morphology

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Dorsal spines (total): 11; Dorsal soft rays (total): 12 - 14; Analspines: 4; Analsoft rays: 8 - 9
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Cristina V. Garilao
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Trophic Strategy

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A common species that inhabits shallow coral reefs (Ref. 58534) and lagoon and seaward reefs to depths of 30 m or more. Benthopelagic (Ref. 58302). Occurs under ledges or in crevices during the day and feeds on isopods; at night it roams over open sand and low-profile reef areas to feed on polychaetes and small crabs. Stomach contents listed gastropods (e.g. Atys sp.), polychaetes, small clams, solenogastrid, isopods, brachyuran crabs, and other crustaceans (Ref. 27370). Tends to occur in aggregations (Ref. 30573). Venomous spine on its preopercle. Size rarely exceeds 13 cm. Minimum depth reported taken from Ref. 30874.
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Biology

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A common species that inhabits shallow coral reefs (Ref. 58534) and lagoon and seaward reefs to depths of 30 m or more. Benthopelagic (Ref. 58302). Occurs under ledges or in crevices during the day and feeds on isopods; at night it roams over open sand and low-profile reef areas to feed on polychaetes and small crabs. Stomach contents listed gastropods (e.g. Atys sp.), polychaetes, small clams, solenogastrid, isopods, brachyuran crabs, and other crustaceans (Ref. 27370). Tends to occur in aggregations (Ref. 30573). Venomous spine on its preopercle. Size rarely exceeds 13 cm. Minimum depth reported taken from Ref. 30874.
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Crispina B. Binohlan
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Importance

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fisheries: minor commercial; aquarium: commercial; price category: medium; price reliability: very questionable: based on ex-vessel price for species in this family
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Crispina B. Binohlan
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分布

provided by The Fish Database of Taiwan
分布於印度-太平洋區,由紅海、東非到夏威夷與皮特凱恩群島,北至琉球與小笠原群島,南至澳洲北部與羅德豪島。臺灣各地礁區皆有分布。
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臺灣魚類資料庫
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臺灣魚類資料庫

利用

provided by The Fish Database of Taiwan
一般以一支釣及延繩釣的方法捕獲。魚肉白,但質地較爛,煮湯時肉易散開且多溶解油質,因此適合抹鹽油煎食用。唯須注意其內臟可能累積熱帶海魚毒。而它的鱗片及棘刺尖利,需小心刺傷。在水族館中也有人看上它鮮紅的體色,將它飼養做為觀賞魚。
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描述

provided by The Fish Database of Taiwan
體呈橢圓形,中等側扁。頭部具黏液囊,外露骨骼多有脊紋。眼大。口端位,裂斜。下頜不突出於上頜。前上頜骨的凹槽大約達眼窩的前緣稍後方;鼻骨的前緣圓形;鼻窩沒有小刺。前鰓蓋骨後下角具ㄧ強棘,長度小於2/3眼徑;眶下骨上緣沒有側突的小棘。體被大型櫛鱗;側線完全,側線鱗數 47-52,側線至背鰭硬棘中間點之鱗片數 2.5;頰上具 5-6 列斜鱗。鰓耙數6-8+13-15=19-23。背鰭連續,單一,硬棘部及軟條部間具深凹,具硬棘 X-I,軟條 14;最後一根硬棘短於前一根硬棘。臀鰭有硬棘 IV,軟條 9;胸鰭軟條 14-15 ;尾鰭深叉形。具寬深的紅色與狹窄的銀白色斑紋交互的體側。背鰭的硬棘部鰭膜全為紅色至紅黑色,中央白色細縱紋止於中部,而其後之硬棘為白色;臀鰭最大棘區為深紅色;胸鰭基軸無黑斑。
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棲地

provided by The Fish Database of Taiwan
主要棲息在亞潮帶水深約1-90公尺的海域,喜愛以珊瑚礁臺、潟湖或向海的礁坡為家。夜行性魚類,但白天偶爾會單獨一隻或一小群的在礁岩下覓食等足目動物,不過還是以晚上出來活動的較為多見。以礁底的小型甲殼類或小魚為食物。
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Sargocentron diadema

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Sargocentron diadema, known commonly as the crowned squirrelfish, is a member of the family Holocentridae in the order Beryciformes. Squirrelfish in general are large, active, nocturnal fish which are usually red in color.[2]

Distribution

The crowned squirrelfish is commonly found on the reefs of the Indo-Pacific, from East Africa to Tahiti.[3]

Description

The fish is bright red with thin white lines crossing from the gill cover to the caudal peduncle. The gill cover has two vertical white lines. A third line runs along the upper lip and below the large eye.[3]

In captivity

This species is sometimes kept in aquaria. It is an active, shoaling fish which is kept in large tanks with other individuals of the species. Other species of a similar size can be kept with it, but it may eat smaller fish. It can be sustained on meat-based fish food.[2]

The aquarium is kept between 72 and 78 °F (22-26 °C) the pH is about 8.1 to 8.4, and the salinity is 1.020 to 1.025.[4]

References

  1. ^ The Taxonomicon
  2. ^ a b Bailey, M. and G. Sandford. The Ultimate Encyclopedia of Aquarium Fish & Fish Care. p. 246.
  3. ^ a b Mills, D. Eyewitness Handbooks Aquarium Fish: The Visual Guide to More Than 500 Marine and Freshwater Fish Varieties. pg. 284.
  4. ^ Aquatic Community

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Sargocentron diadema: Brief Summary

provided by wikipedia EN

Sargocentron diadema, known commonly as the crowned squirrelfish, is a member of the family Holocentridae in the order Beryciformes. Squirrelfish in general are large, active, nocturnal fish which are usually red in color.

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Description

provided by World Register of Marine Species
Inhabits subtidal reef flats and lagoon and seaward reefs to depths of 30 m or more. Occurs under ledges or in crevices during the day and feeds on isopods; at night it roams over open sand and low-profile reef areas to feed on polychaetes and small crabs. Venomous spine on its preopercle. Size rarely exceeds 13 cm.

Reference

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

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