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Ophidiiformes (Cusk eels) >
Bythitidae (Livebearing brotulas)
Etymology: Grammonus: Greek, gramma = signal, mark + Greek, onos = hake; nagaredai: provided a series of photographs taken in his aquarium.
Eponymy: Bronson Hiroki Nagareda (d: 1976) is a biologist and aquarist. [...] (Ref. 128868), visit book page.
More on authors: Randall & Hughes.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien benthopelagisch; diepte 6 - 9 m (Ref. 79569). Tropical
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Pacific: Hawaiian Islands.
Grootte / Gewicht / Leeftijd
Maturity: Lm ?  range ? - ? cm
Max length : 82.0 cm SL mannelijk / geslacht onbekend; (Ref. 79569); 106.0 cm SL (female)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale zachte stralen (totaal) : 86; Anale zachte stralen: 64 - 66; Wervels: 42. Predorsal scales extending to interorbital space; scales present on opercle and preopercle; three overlapping longitudinal rows of prominent sensory papillae on body; body depth at origin of dorsal fin 3.2–3.4 in SL; head length 3.15-3.2 in SL; mouth strongly oblique; edge of preopercle smooth except for a tiny spine at rounded corner; caudal fin joined only basally to dorsal and anal fins; normal life color dark
brown, the sensory papillae on head and body white.
From caves off O'ahu and Hawai'i (Ref. 79569).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Randall, J.E. and Hughes M.J., 2009. Grammonus nagaredai, a new viviparous marine fish (Ophidiiformes: Bythitidae) from the Hawaiian Islands. Pacific Science 63(1):137-146. (Ref. 79569)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2024-2)
Gevaar voor de mens
Harmless
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00447 (0.00172 - 0.01163), b=3.10 (2.87 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 4.0 ±0.6 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref.
120179): Zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (78 of 100).