分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii
板鰓亞綱 (鯊魚與魟魚) (sharks and rays) >
Squaliformes (Sleeper and dogfish sharks)
角鯊目 (Sleeper and dogfish sharks) >
Dalatiidae (Sleeper sharks)
鎧鯊科 (Sleeper sharks)
Etymology: Squaliolus: Diminutive of squalus (L.), a sea-fish, usually applied to sharks, referring to small size of S. laticaudus (See ETYFish); aliae: In honor of the Teng’s wife Huang A-li, for her “cordial help and constant encouragement” [originally spelled alii; since name honors a woman, aliae reflects the correct gender] (See ETYFish).
Eponymy: Huang A-li is the name of Teng’s wife. He named the shark, which was first caught inTaiwanese waters, after her “…for her continuous encouragement and assistance over the past 20-some years”. (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 深海區的; 深度上下限 200 - 2000 m (Ref. 6871). 深水域
Western Pacific: Japan to Australia (off northwestern Australia and New South Wales).
西太平洋: 日本到澳洲 (外海的澳洲西北部與新南威爾斯).
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm ?, range 15 - ? cm
Max length : 22.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 6871)
背棘 (總數) : 1; 臀棘: 0. The smalleye pygmy shark, Squaliolus aliae, is a very small dogfish (about 22cm) characterized by its small eye, with diameter about 46-70% of interorbital width, and with upper margin angular and chevron-shaped; upper lip with a pair of prominent lateral papillae (rarely indistinct) (Ref. 31367, 6871).Colour: dark brown to black, fin margins pale (Ref. 6871). Squaliolus are the only sharks with a fin spine on its first dorsal fin (spine sometimes concealed by skin) but not on its second dorsal fin; second dorsal fin long-based and low, about twice the length of the first dorsal fin base; first dorsal-fin base closer to pectoral fins than to pelvic fins; and caudal fin nearly symmetrical, with subterminal notch present (Ref. 247, 6871).
小眼的矮鯊 , Squaliolus aliae,是特徵為它的小眼,有直徑大約 46-70% 的眼間骨寬度的一隻非常小的狗鯊 (大約 22 公分), 而且與上緣有角而鋸齒形的; 上嘴唇有一對突出的側面乳突 (非常不明顯的) 。 (參考文獻 31367,6871)顏色: 深褐色的到黑色的, 鰭邊緣灰白的.(參考文獻 6871) Squaliolus 是鯊魚有鰭棘在它的第一背鰭 (有時被皮膚隱藏的棘) 的唯一者但是不在它的第二背鰭鰭上; 第二背鰭鰭基底長而低的, 大約長度兩倍於第一背鰭基底; 第一背鰭鰭基底更靠近胸鰭超過對腹鰭; 而且尾鰭幾乎對稱, 與接近端位的凹槽呈現.(參考文獻 247,6871)
Possibly the smallest living shark (Ref. 6871). Found near continental and island land masses (Ref. 31367). Feeds mainly on cephalopods and small midwater bony fishes (Ref. 6871). Probably makes diurnal vertical migrations from within 200 m of the surface at night down to about 2,000 m during the day (Ref. 6871). Ovoviviparous (Ref. 6871).
可能最小活的鯊魚.(參考文獻 6871) 發現於靠近了大陸的與島大陸區塊.(參考文獻 31367) 主要吃頭足類動物與小的中層水域硬骨魚類。 (參考文獻 6871) 可能從晚上在水面下200公尺以內作每日垂直迴游向下至大約 2,000 公尺在白天期間.(參考文獻 6871) 卵胎生的.(參考文獻 6871)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Distinct pairing with embrace (Ref. 205). Ovoviviparous but litter size unknown (Ref. 6871). Males mature at 15 cm (Ref. 31367).西太平洋: 日本到澳洲 (外海的澳洲西北部與新南威爾斯).
Last, P.R. and J.D. Stevens, 1994. Sharks and rays of Australia. CSIRO, Australia. 513 p. (Ref. 6871)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
無危 (LC) ; Date assessed: 13 May 2015
人類使用
漁業: 沒有興趣
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Estimates based on models
Preferred temperature (Ref.
123201): 4.6 - 10.1, mean 6.5 °C (based on 559 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7520 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00309 (0.00142 - 0.00675), b=3.14 (2.94 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 4.4 ±0.57 se; based on food items.
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Low vulnerability (12 of 100).
