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Scombriformes (Mackerels) >
Chiasmodontidae (Snaketooth fishes)
Etymology: Pseudoscopelus: Greek, pseudes = false + Greek, skopelos = a lantern fish (Ref. 45335). Lütken did not recognize the presence of photophores on the body, confusing them with pores, but referred to a genus of lanternfish (Scopelus now Myctophum) when he named the genus (Ref. 85782).
Environment: milieu / climate zone / пределы глубины / distribution range
экология
морской батипелагический; пределы глубины 30 - 2390 m (Ref. 56658), usually 50 - 1870 m (Ref. 85782). Deep-water; 46°N - 36°S, 0°E - 0°W
Circum sub- and tropical: Atlantic Ocean (from 46°N-36°S, 7°W-88°W). Pacific Ocean (33°N-27°S, 99°W-121°E), including off Japan and several records from the Western Indian Ocean (Ref. 85782). The northern occurrence in Atlantic and Pacific most likely due to transportation by Gulf Stream and Kuroshio, resp. (Ref. 78616).
Size / Вес / Возраст
половая зрелость: Lm ? range ? - ? cm
Max length : 20.0 cm SL самец/пол неопределен; (Ref. 47377); common length : 10.1 cm SL самец/пол неопределен; (Ref. 13608)
Краткое описание
определительные ключи | морфология | морфометрия
членистые (мягкие) лучи спинного плавника (общее число) : 21 - 23; членистые (мягкие) лучи анального плавника: 20 - 24; позвонки: 36 - 38. This species can be distinguished from P. paxtoni by dentition and photophore pattern with innermost premaxillary teeth in mesial row not extremely elongated, when mouth is closed teeth not reaching the contralateral premaxilla (vs. innermost premaxillary teeth in mesial row very elongate, reaching contralateral premaxilla when mouth is closed); teeth of mesial row of premaxilla and internalmost row of dentary slightly curved (vs. teeth of mesial rows of premaxilla and internalmost row of dentary straight); mesial series of premaxillary teeth arranged in transverse rows of 1-5 rows of teeth (vs. mesial series of premaxillary teeth arranged in transverse rows of 1-3 rows of teeth) (Ref. 85782).
Body shape (shape guide): fusiform / normal.
A meso- to bathypelagic (Ref. 85782). One record at 4,631m deep (Ref. 78616).
Life cycle and mating behavior
половая зрелость | размножение | нерест | икра | Fecundity | личинки
Melo, M.R.S., 2010. A revision of the genus Pseudoscopelus Lütken (Chiasmodontidae: Acanthomorphata) with descriptions of three new species. Zootaxa 2710:1-78. (Ref. 85782)
Статус Красного Списка МСОП (Ref. 130435: Version 2025-1)
Угроза для людей
Harmless
Использование человеком
рыболовство: интереса не представляет; объект спортивного рыболовства: да
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Estimates based on models
Phylogenetic diversity index (ссылка
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01072 (0.00401 - 0.02866), b=3.03 (2.80 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (ссылка
69278): 3.8 ±0.2 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (14 of 100).
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