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Syngnathus acus  Linnaeus, 1758

Greater pipefish
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Syngnathus acus
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Actinopterygii 輻鰭魚綱 (條鰭魚) > Syngnathiformes (Pipefishes and seahorses) > Syngnathidae (Pipefishes and seahorses) > Syngnathinae
Etymology: Syngnathus: Greek, syn, symphysis = grown together + Greek, gnathos = jaw (Ref. 45335).   More on author: Linnaeus.

環境 / 氣候 / 範圍 生態學

; 海洋; 半鹹淡水 居於水底的; 非遷移的 (Ref. 88171); 深度上下限 0 - 110 m (Ref. 4281), usually 3 - 12 m.    , preferred ?; 71°N - 35°S, 19°W - 42°E

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Eastern Atlantic: Norway, Faroes and British Isles to Western Sahara, Senegambia, and from Namibia to Cape of Good Hope and northward to the coast of Zululand in the western Indian Ocean (Ref. 4127). Also throughout the Mediterranean, Aegean and Black seas. Despite literature records, occurrence in the Indo-Pacific outside South African waters lacks conclusive evidence (Ref. 4281).

Length at first maturity / 大小 / 重量 / 年齡

Maturity: Lm ?, range 7 - 25.6 cm
Max length : 50.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 35388)

簡短描述 型態特徵 | 形態測量圖

背棘 (總數): 0; 背的軟條 (總數): 33-42; 臀棘 0; 臀鰭軟條: 3. Light greenish to dark brown in color with variable markings (Ref. 4281). Snout cylindrical, equal to or less than eye diameter. With 18 - 19 body rings between head and dorsal fin (Ref. 35388). The snake pipefish (Entelurus aequoreus) is distinguished by the lack of pectoral and anal fins (Ref. 88171). An elongated bump on top of head behind eye (Ref. 59043).

生物學特性     字彙 (例如 epibenthic)

Found in coastal and estuarine waters to depths of at least 110 m (Ref. 4281); on sand, mud and rough bottoms. Common amongst algae and eel-grass (Zostera) (Refs. 4146, 6733, 88187). Feeds mainly on small crustaceans (Ref. 85544).

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | | 孕卵數 | 仔魚

Ovoviviparous; reproducing on average 3 times each year (Ref. 89328). Several females depositing partial clutches to a male’s brood pouch under the tail (Refs. 205, 31201). Up to 400 eggs may be found in a single pouch (Ref. 89329). Brooding males occur mainly between May and July (Refs. 31201, 58137). During the breeding season, both males and females were observed to remain low amongst the seagrass in one meadow (Ref. 31201). Gestation period lasts about 5 weeks and size at birth is 1.7- 3.5 cm (Refs. 58137, 88187, 89330). Aquarium experiments have shown that new born young are benthic, remaining close to the bottom Ref. 89330).

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

Dawson, C.E., 1986. Syngnathidae. p. 628-639. In P.J.P. Whitehead, M.-L. Bauchot, J.-C. Hureau, J. Nielsen and E. Tortonese (eds.) Fishes of the North-eastern Atlantic and the Mediterranean. Volume 2. Unesco, Paris. (Ref. 6733)

IUCN 瀕危狀態 (Ref. 115185)

CITES (Ref. 94142)

Not Evaluated

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