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Delicate Whiptail

Hymenogadus gracilis (Gilbert & Hubbs 1920)

Diagnostic Description

provided by Fishbase
This species is distinguished by the following set of characters: spinous first dorsal fin ray weakly serrated, more distinct near tip of ray; pelvic fin rays 7-10, usually 8-9; gill rakers first arch (outer/inner) 8-12/14-18; large barbel, its length 20-30% HL; short snout length 16-26% HL; very narrow suborbital 4-8% HL; upper jaw length 43-52% HL; a row of enlarged melanophores along lateral mid-line of the tail; cylindrical body (Ref. 97189).
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Recorder
Estelita Emily Capuli
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Trophic Strategy

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Found on the continental slope (Ref. 75154). Feeds on planktonic crustaceans.
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Drina Sta. Iglesia
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Biology

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Feeds on planktonic crustaceans (Ref. 6187).
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Estelita Emily Capuli
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分布

provided by The Fish Database of Taiwan
分布於世界三大洋:包括印度-大西洋區內的菲律賓、日本及台灣東北部;東南太平洋;西北大西洋及東大西洋之墨西哥等海域。
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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
一般以底拖網捕獲,不具食用價值,通常做為下雜魚用。
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描述

provided by The Fish Database of Taiwan
體型延長呈圓錐狀;頭部稍平扁,頭骨薄而易碎。吻部短而銳,吻端有3個尖銳的突起。口大,下位;頤部有一短鬚。第一背鰭之第II硬棘鋸齒狀,兩背鰭間距甚寬。腹鰭有一延長鰭條;胸鰭基部位於第一背鰭前。體被大而薄之弱棘鱗,極易脫落。發光器發達,由肛門前方一直伸展到胸鰭基部前方,兩端各有一晶體。體為粉紅色,體下半部銀色,腹部有黑色斑點。
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棲地

provided by The Fish Database of Taiwan
主要棲息於160-345公尺深泥砂底質、水溫5-7℃的水域。深海底棲性魚類,以浮游性甲殼類為主食。是群聚性,快速游動的種類。生殖季為每年1-3月。數量不多。
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Graceful grenadier

provided by wikipedia EN

Hymenogadus gracilis, also known as the Graceful grenadier is a species of rattail fish. It is found at depths of 160–345 m (525–1,132 ft) in tropical and subtropical seas worldwide.[1] This is one of the smallest of the rattails, growing to no more than 13 cm (5.1 in) in length. It is a slender fish with a large mouth, with rows of very small teeth, positioned in the underside of the skull. There is a short, thin chin barbel. It is more strikingly marked than most rattails, with bold black streaks on the head and black and silver barring over most of the body. There is a long bioluminescent organ with two lenses underneath the rear end of the body.[2]

References

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Graceful grenadier: Brief Summary

provided by wikipedia EN

Hymenogadus gracilis, also known as the Graceful grenadier is a species of rattail fish. It is found at depths of 160–345 m (525–1,132 ft) in tropical and subtropical seas worldwide. This is one of the smallest of the rattails, growing to no more than 13 cm (5.1 in) in length. It is a slender fish with a large mouth, with rows of very small teeth, positioned in the underside of the skull. There is a short, thin chin barbel. It is more strikingly marked than most rattails, with bold black streaks on the head and black and silver barring over most of the body. There is a long bioluminescent organ with two lenses underneath the rear end of the body.

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