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Eupercaria/misc (Various families in series Eupercaria) >
Sciaenidae (Drums or croakers)
Etymology: Umbrina: Latin, umbra, -ae = shadow, in the sense of phantom; due to its quick movements (Ref. 45335).
Eponymy: William ‘Bill’ A. Bussing (1933–2014) was an American ichthyologist at the School of Biology, Universidad de Costa Rica where he taught for over four decades, retiring as Professor Emeritus (1991). Military service in Korea interrupted his education [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / rango de profundidad / distribution range
Ecología
marino bentopelágico; rango de profundidad 32 - 290 m (Ref. 58018). Tropical; 24°N - 8°N
Eastern Central Pacific: southern Baja California, Mexico to Costa Rica.
Tamaño / Peso / Age
Madurez: Lm ?  range ? - ? cm
Max length : 30.0 cm TL macho / no sexado; (Ref. 9118)
Short description
Claves de identificación | Morfología | Morfometría
Body elongated, with back and belly normally arched; snout pointed; mouth small and inferior; lower jaw enclosed by upper; chin with one stiff barbel; edge of preopercle serrate; lower branch of first gill arch with 11 to 13 gill rakers; second dorsal fin moderately long, with 12 to 23 soft rays; body uniformly dark and silvery; back with one or more indistinct dark spots; roof of mouth and top of branchial cavity black; opercle translucent, resembling a spot externaly (Ref. 55763).
Body shape (shape guide): fusiform / normal; Cross section: other (see Diagnosi.
Life cycle and mating behavior
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Chao, L.N., 1995. Sciaenidae. Corvinas, barbiches, bombaches, corvinatas, corvinetas, corvinillas, lambes, pescadillas, roncachos, verrugatos. p. 1427-1518. In W. Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para identificacion de especies para los fines de la pesca. Pacifico Centro-oriental. 3 volumes. 1813 p. (Ref. 9118)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Pesquerías: escaso valor comercial
Herramientas
Special reports
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Fuentes de Internet
Estimates based on models
Preferred temperature (Referencia
123201): 13.3 - 21.5, mean 15.3 °C (based on 23 cells).
Phylogenetic diversity index (Referencia
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00933 (0.00472 - 0.01845), b=3.08 (2.92 - 3.24), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Nivel trófico (Referencia
69278): 3.3 ±0.5 se; based on size and trophs of closest relatives
Resiliencia (Referencia
120179): Alto, población duplicada en un tiempo mínimo inferior a 15 meses (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (20 of 100).
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