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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.
Eponymy: Albert Honoré Charles Grimaldi (1848–1922), Albert I, Prince of Monaco was an oceanographer who founded Monaco’s Institut Océanographique. He also (1911) created the Monte Carlo Rally, an automobile race designed to attract tourists to Monaco. (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
Θαλασσινό(ά) βαθυπελαγικό(ς); εύρος βάθους 0 - 4750 m (Ref. 58018), usually 300 - 400 m (Ref. 6542). Deep-water; 43°N - 49°S, 149°E - 15°E
Tropical to subtropical Atlantic and Pacific oceans.
Μέγεθος / Βάρος / Age
Maturity: Lm ?  range ? - ? cm
Max length : 8.0 cm SL αρσενικό/απροσδιόριστο; (Ref. 6542)
Short description
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Ραχιαίες άκανθες (συνολικά) : 0; Μαλακές ραχιαίες ακτίνες (συνολικά) : 14 - 17; Εδρικές άκανθες: 0; Μαλακές εδρικές ακτίνες: 8 - 9. Dorsal part of head transparent, ventral part and ventral 2/3 of body peppered with large melanophores; ventral surface of rear part of sole with 4 dark blotches (Ref. 6597). Body deep and anal fin on a vertical at posterior end of the sole, short based, rays directed posteriorly (Ref. 37473).
Mesopelagic (Ref. 58302). The limits of its distribution are marked by the 10°C isotherm and the 34, 8 %o isohaline (Ref. 6542).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
Quéro, J.-C., 1990. Opisthroproctidae. p. 241-243. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 6542)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
αλιεία: χωρίς ενδιαφέρον
Εργαλεία
Special reports
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Διαδικτυακές πηγές
Estimates based on models
Preferred temperature (Ref.
123201): 8.8 - 17.3, mean 12.4 °C (based on 59 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02239 (0.00864 - 0.05802), b=2.98 (2.75 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Τροφικό Επίπεδο (Ref.
69278): 4.0 ±0.28 se; based on food items.
Ελαστικότητα (Ref.
120179): Υψηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού < 15 μήνες (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).