分类 / Names
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Teleostei >
Lophiiformes (Anglerfishes) >
Oneirodidae (Dreamers)
Etymology: Leptacanthichthys: Greek, 'leptos' = thin or delicate + Greek, 'akantha' = thorn or spine + Greek, 'ichthys' = fish; a "thin-spined fish"; referring to the unusually thin, delicate illicium.
More on author: Regan.
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋 深海区的; 深度上下限 0 - 2000 m (Ref. 5951), usually 1000 - ? m (Ref. 12204). 深水域
North Atlantic: including Canada. Also Pacific Ocean.
北大西洋: 包括加拿大。 也太平洋。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 0.8 cm SL 雄鱼/尚未辨别雌雄; (Ref. 12204); 6.9 cm SL (female)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 4 - 6; 臀鳍软条: 5 - 6. Unique among dreamers in having a well-developed mandibular spine and a very elongate and narrow pectoral fin lobe (Ref. 12204). Dark in color, with the esca unpigmented in patches (Ref.12204). Metamorphosed females distinguished by the following characteristics: extremely well developed articular spine, considerably longer than quadrate spine; wide ethmoid cartilage and vomer, wider than distance between anterolateral tips of lateral ethmoids and frontals; presence of vomerine teeth; depressed ethmoid region, nasal foramina narrow and oval in shape; long frontals, anterior in posterior, overhanging and extending past the anterior limits of ethmoid cartilage and vomer; nearly linear dorsal margins of frontals; ; ventromedial extensions of frontals approach each other on midline, making contact with parasphenoid; frontals separated from prootics; presence of pterosphenoid; anterior end of illicial trough wider and shallower than posterior end; extremely well developed sphenotic spines; symphysial cartilage of upper jaw longer than wide; lower jaw with small symphysial spine; hyomandibula with double head; ; deeply notched posterior margin of opercle; short and broad subopercle, dorsal end rounded to bluntly pointed, ventral end rounded; absence of first pharyngobranchial; well developed second pharyngobranchial; second hypobranchial directly articulates with second basibranchial; caudal fin rays without internal pigmentation; illicium longer than length of esca bulb; pterygoiphore of illicium cylindrical throughout its length, emerging on snout from between frontal bones, anterior end slightly exposed, posterior end concealed beneath skin; well developed first ray of dorsal fin; dorsal fin rays 4-6; anal fin rays 5; long and narrow pectoral fin lobe, longer than longest rays of pectoral fin; pectoral fin rays 18-22; coracoid lacking posteroventral process; simple pelvic bones, expanded distally; skin is naked, without dermal spinules; darkly pigmented skin of caudal peduncle extends well past base of caudal fin (Ref. 86949). Metamorphosed males: long and narrow pectoral fin lobe, longer than longest pectoral fin rays, articulating along the dorsal margin; short and broad subopercle, dorsal end rounded; lower denticular teeth 6; naked skin, without dermal spinules (Ref. 86949).
独特的在梦鮟鱇科鱼类之中在有一个方面发展良好的颚骨棘与一个非常长与狭窄的胸鳍叶.(参考文献 12204) 深色的颜色, 藉由在区块中是没有颜色的饵球.(参考文献 12204)
Deep-sea species (Ref. 12204). Males parasitic on the females (Ref. 12204).
深海的种.(参考文献 12204) 雄性寄生在雌性上.(参考文献 12204)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
北大西洋: 包括加拿大。 也太平洋。
Coad, B.W., 1995. Encyclopedia of Canadian fishes. Canadian Museum of Nature and Canadian Sportfishing Productions Inc. Singapore. (Ref. 12204)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-2)
人类利用
渔业: 没有兴趣
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Estimates based on models
Preferred temperature (Ref.
123201): 0.2 - 5.4, mean 3.6 °C (based on 1622 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.6 ±0.5 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
