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Ophidiiformes (Cusk eels) >
Bythitidae (Livebearing brotulas)
Etymology: Grammonus: Greek, gramma = signal, mark + Greek, onos = hake; minutus: The specific name, minutus, refers to the
short length at which the males attain maturity and ripen (Ref. 84063).
More on authors: Nielsen & Prokofiev.
Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien benthopelagisch; diepte 70 - 119 m (Ref. 94063). Tropical; 13°N - 12°N, 109°E - 110°E
Pacific Ocean: off Central Vietnam. Known from two localities (Ref. 84063).
Grootte / Gewicht / Leeftijd
Maturity: Lm ?  range ? - ? cm
Max length : 5.5 cm SL mannelijk / geslacht onbekend; (Ref. 84063)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Grammonus minutus differs from the nine described Grammonus species since it exhibits the following combination of characters: fin rays in dorsal 75–76, anal 54–55, pectoral 22–23, number of vertebrae 12 + 30, interorbital 7.4% of SL. Males have already reached maturity by a length of 32 mm SL.
Depending on the changes in the current system in the Bay of Nha Trang and adjoining areas, juveniles and adolescents of deep-water fishes occur in the collection area at these shallow depths. According to T.T. Hieu, Institute of Oceanography, Nha Trang (personal communication, 2009), there are a number of deep canyons cutting into the outer shelf, which explains the capture of many relatively deep-living species. It is thus possible that G. minutus may live deeper than indicated by the actual trawling depths (Ref. 84063).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Nielsen, J.G. and A.M. Prokofiev, 2010. A new, dwarf species of Grammonus (Teleostei: Bythitidae) found off Vietnam. Ichthyol. Res. 57:189-192. (Ref. 84063)
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=0.01995 (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).
Trofisch niveau (Ref.
69278): 3.3 ±0.5 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).