分類 / Names
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
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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
生態学
海 深海浮遊性; 深さの範囲 0 - 2000 m (Ref. 5951), usually 1000 - ? m (Ref. 12204). Deep-water
North Atlantic: including Canada. Also Pacific Ocean.
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 0.8 cm SL オス/雌雄の選別がない; (Ref. 12204); 6.9 cm SL (female)
簡単な記述
検索表 | 形態学 | 形態計測学
背鰭 (合計) : 4 - 6; 臀鰭: 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).
Deep-sea species (Ref. 12204). Males parasitic on the females (Ref. 12204).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Coad, B.W., 1995. Encyclopedia of Canadian fishes. Canadian Museum of Nature and Canadian Sportfishing Productions Inc. Singapore. (Ref. 12204)
IUCNのレッドリストの状況は (Ref. 130435: Version 2024-2)
Human uses
水産業: 興味がない
用具
特記事項
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インターネットの情報源
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).
栄養段階 (Ref.
69278): 3.6 ±0.5 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高い, １５か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
