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Argentiniformes (Marine smelts) >
Opisthoproctidae (Barreleyes or spookfishes)
Etymology: Monacoa: The name constructed by Whitley was without any etymological reason; however, it is likely referring to the state of Monaco, in which the research expedition that sampled the two syntypes originated; niger: Name from Latin 'niger' for 'black'; referring to the black streak of pigmentation present on the sole.
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
marien bathypelagisch; diepte 0 - 520 m (Ref. 111070). Deep-water
Eastern Central Pacific: off American Samoa and possibly Australia.
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 4.8 cm SL mannelijk / geslacht onbekend; (Ref. 111070)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
This species is distinguished by having black pigmentation along the entire sole and possibly have a darker or more blackish body color compared to congeners (scale pockets are darker); and the black streak on the sole possibly consists of distinct patches posteriorly . The holotype is slightly damaged on the sole and variation of its pigmentation pattern must be assessed with future fresh material (Ref. 111070).
Body shape (shape guide): short and / or deep; Cross section: other (see remarks).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Poulsen, J.Y., T. Sado, C. Hahn, I. Byrkjedal, M. Moku and M. Miya, 2016. Preservation obscures pelagic deep-sea fish diversity: doubling the number of sole-bearing opisthoproctids and resurrection of the genus Monacoa (Opisthoproctidae, Argentiniformes). Plos One 11(8):1-23. (Ref. 111070)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
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Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref. 82804) |
PD50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.02239 (0.00876 - 0.05724), b=2.99 (2.76 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Trofisch niveau (Ref. 69278) |
3.3 ±0.1 se; based on size and trophs of closest relatives |
Weerstandsvermogen (Ref. 120179) |
Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.). |
Kwetsbaarheid van de visserij (Ref. 59153) |
Low vulnerability (12 of 100). 🛈 |