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Stomiiformes (Lightfishes and dragonfishes) >
Sternoptychidae (Marine hatchetfishes) > Maurolicinae
Etymology: Valenciennellus: From Achille Valenciennes 1794-1865; he worked with Duméril, Cuvier and Lacepède since 1815; malacologist, author of a "Histoire naturelle des poissons" (Ref. 45335).
Eponymy: Achille Valenciennes (1794–1865) was a French zoologist; primarily an ichthyologist and conchologist. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecología
marino batipelágico; no migratorio; rango de profundidad 100 - 1000 m (Ref. 74511), usually 200 - 400 m (Ref. 4462). Deep-water; 67°N - 34°S, 98°W - 117°W
Worldwide in tropical to temperate waters (Ref. 37039). Eastern Atlantic: scattered records in Iceland, Ireland, Mediterranean Sea, also from Portugal southward to Namibia. Western Atlantic: Gulf of Mexico (Ref. 27768). Northwest Atlantic: Canada (Ref. 5951). Eastern Pacific: California Current region (Ref. 35838). South China Sea (Ref.74511).
Length at first maturity / Tamaño / Peso / Age
Maturity: Lm ?, range 3 - ? cm
Max length : 3.1 cm SL macho / no sexado; (Ref. 4462); 3.1 cm SL (female)
Short description
Claves de identificación | Morfología | Morfometría
Espinas dorsales (total) : 0; Radios blandos dorsales (total) : 7 - 10; Espinas anales: 0; Radios blandos anales: 22 - 25. Silvery in color during the day, darker at night. Branchiostegal rays: 9-10 (Ref. 35838). Unique arrangements of the photophores on the tail, five separated groups containing 2-4 light organs (Ref. 37473).
Oceanic and mesopelagic, with marked stratification of size with depth (Ref. 4739). Generally non-migrant or only short diel vertical migrations (Ref. 4739). A selective daytime feeder on copepods (mainly Pleuromamma and ostracods, Conchoecia) (Ref. 4739). Also Ref. 58302.
Life cycle and mating behavior
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Annual species probably spawning year round (Ref. 4739). Spawns more than once with egg batches about 100-360 eggs/ovary pair, the number increasing with animal size (Ref. 4739).
Quéro, J.-C., J.C. Njock and M.M. de la Hoz, 1990. Sternoptychidae. p. 275-282. 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. 4462)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Herramientas
Special reports
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Fuentes de Internet
Estimates based on models
Preferred temperature (Ref.
123201): 8.1 - 19, mean 12.7 °C (based on 680 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Nivel trófico (Ref.
69278): 3.1 ±0.24 se; based on food items.
Resiliencia (Ref.
120179): Medio, población duplicada en un tiempo mínimo de 1.4-4.4 años (tmax=1; tm<1; Fec=100-360 (annual<1000)).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
