Issue
The species was placed in the genus Bathyphasma Gilbert, 1896 by Balushkin (2012), genus he resurrected on the basis of a few characters. He was followed by authors thereafter but with no supplementary evidence. Orr et al. (2019) did not support the resurrection from their phylogeny, on the basis of a lack or morphological synapomorphies with other sister-species, which we follow in FishBase and WoRMS. As Bathyphasma ovigerum Gilbert 1896 in ECoF (March 2024).
Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien bathydemersaal; diepte 1920 - 2910 m (Ref. 6885). Deep-water
Northeast Pacific: off northern British Columbia. Occurrence record from Washington (Ref. 5515).
Grootte / Gewicht / Leeftijd
Maturity: Lm ? range ? - ? cm
Max length : 43.1 cm SL mannelijk / geslacht onbekend; (Ref. 12204)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 0; Dorsale zachte stralen (totaal) : 40 - 45; Anale stekels: 0; Anale zachte stralen: 35 - 36; Wervels: 45 - 50. This species is distinguished from its congeners by the following set of characters: both jaws with narrow rows of stout, sharp, simple, recurved teeth; a moderate-sized gill opening which extends ventrally to pectoral rays 4-8; pelvic disk large 25-38% HL; cephalic pore pattern 2-6-7-1; most similar to C. lycopersicus and C. kamikawai, which are both distinguished from C. ovigerus by their broad bands of trilobed teeth (Ref. 91047).
The holotype, a male, was found to carry developing eggs in its mouth (Ref. 6885). Two females were ripe with large yolked eggs 6-7 mm in diameter, while the male of 33.0 cm SL had enlarged testes. Two smallest and immature females examined (18.0-18.5 cm SL) had small ovaries with many small white eggs ca. 1 mm in diameter (Ref. 91047).
Levenscyclus en paargedrag
Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven
McAllister, D.E., 1990. A list of the fishes of Canada. Syllogeus No. 64. Nat. Mus. Nat. Sci., Ottawa, Canada. 310 p. (Ref. 11980)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gevaar voor de mens
Harmless
Gebruik door de mens
Tools
Speciale rapporten
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Internetbronnen
Estimates based on models
Preferred temperature (Ref.
123201): 1.7 - 1.9, mean 1.9 °C (based on 7 cells).
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00447 (0.00204 - 0.00980), b=3.17 (2.99 - 3.35), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.4 ±0.5 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref.
120179): Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (41 of 100).
