Klassifizierung / Names
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Ophidiiformes (Cusk eels) >
Ophidiidae (Cusk-eels) > Neobythitinae
Etymology: Tenuicephalus: Name from Latin 'tenuis' for thin, weak and 'cephalus' for 'head', referring to the delicate and weak nature of the head ossification which often results in damaged specimens when recovered from deep-water trawls.
Environment: milieu / climate zone / Tiefenbereich / distribution range
Ökologie
seewasser demersal; tiefenbereich 1037 - 1930 m (Ref. 125143). Tropical
Western Indian: Madagascar Channel and Western Pacific: Philippines.
Size / Gewicht / Alter
Geschlechtsreife: Lm ? range ? - ? cm
Max length : 17.5 cm SL Männchen/unbestimmt; (Ref. 125143)
Kurzbeschreibung
Bestimmungsschlüssel | Morphologie | Morphometrie
This species is distinguished by the following charcters: precaudal vertebrae 15-16, loin vertebrae 2-4, last precaudal vertebrae without ribs; first gill arch with long gill rakers 17-21; pectoral-fin rays 16-18; HL:HD 1.37-1.55; maximal HD:HD through center of eye 1.75-1.90; weak head spines on ethmoidal and interorbital; opercular spine sharp and extruding; opercular flap small; scales on occiput, cheeks, opercle and maxilla; vomer narrow, naked or with few teeth or with one row of teeth; palatines narrow with 2-3 rows of teeth; basibranchial tooth patch small, narrow with 2 rows of teeth; otolith small, 5.0-6.5 % in HL, with single colliculum; OL:OH = 1.14-1.20; OL:TCL = 1.94-2.30 (Ref. 125143).
Cross section: compressed.
This species does not seem to venture far away from the continental slopes (Ref. 125143).
Life cycle and mating behavior
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven
Schwarzhans, W.W. and P.R. Møller, 2021. Revision of the ‘dragon-head’ cusk eels of the genus Porogadus (Teleostei: Ophidiidae), with description of eight new species and one new genus. Zootaxa 5029(1):001-096. (Ref. 125143)
IUCN Rote Liste Status (Ref. 130435: Version 2025-1)
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Fischereien: nicht kommerziell
Tools
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00380 (0.00167 - 0.00864), b=3.14 (2.94 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.5 ±0.6 se; based on size and trophs of closest relatives
Widerstandsfähigkeit (Ref.
120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (11 of 100).
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