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Percopsiformes (Trout-perches, pirate perches and cavefishes) >
Percopsidae (Trout-perches)
Etymology: Percopsis: Greek, perke = perch + Greek, opsis = appearance (Ref. 45335); omiscomaycus: omiscomaycus which is probably an Algonkian Indian name that includes the root 'trout' (Ref. 1998).
More on author: Walbaum.
Entorno: milieu / zona climática / rango de profundidad / gama de distribución
Ecología
; agua dulce demersal; potamodromo (Ref. 126106); rango de profundidad 10 - 61 m (Ref. 27547). Temperate; 68°N - 37°N
North America: Atlantic and Arctic basins throughout most of Canada, and south to Potomac River drainage in Virginia, USA; Yukon River drainage in Yukon Territory and Alaska; Great Lakes and Mississippi River basins south to West Virginia, Kentucky, Illinois, Missouri, North Dakota and Montana in the USA.
Longitud en la primera madurez / Tamaño / Peso / Edad
Madurez: Lm 11.4, range 8 - 15.4 cm
Max length : 20.0 cm TL macho / no sexado; (Ref. 5723); common length : 8.8 cm TL macho / no sexado; (Ref. 12193); edad máxima reportada: 4 años (Ref. 10348)
Descripción breve
Claves de identificación | Morfología | Morfometría
Espinas dorsales (total) : 1 - 3; Radios blandos dorsales (total) : 9 - 11; Espinas anales: 1; Radios blandos anales: 5 - 9; Vértebra: 33 - 36. Distinguished by the presence of an adipose fin; small weak spines in the dorsal and anal spines; rough ctenoid scales; and pectoral fins reaching well behind the bases of pelvic fins (Ref. 27547). Gill rakers short, stubby mounds with small teeth; lateral line nearly straight (Ref. 27547). Pale yellowish to silvery, often almost transparent; with a row of about 10 dark spots along midline of back, 10 or 11 spots along lateral line, and another row of spots high on sides above lateral line; fins transparent (Ref. 27547).
Body shape (shape guide): elongated.
Adults occur in lakes, deep flowing pools of creeks, and rivers (Ref. 5723). Usually found over sand (Ref. 5723). They move into the shallows of lakes at night to feed and moves back to deeper water as dawn approaches (Ref. 1998). They feed on insect larvae, amphipods and fishes (Ref. 1998). Important forage fish (Ref. 1998).
Spawning adults move inshore to shallow water or into shallow tributaries of lakes (Ref. 10348). Two or more males cluster with a single female near the surface. They press close to the female, often breaking the surface of the water, and eggs and milt are released (Ref. 27547). Some populations spawn exclusively at night (Ref. 10348), but others show no variation from daytime spawning (Ref. 10349). There is often, perhaps usually, heavy postspawning mortality (Ref. 27547).
Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Amenaza para el ser humano
Harmless
Usos humanos
Pesquerías: sin interés; Acuario: Acuarios públicos; carnada: occasionally
Herramientas
Informes especiales
Descargar XML
Fuentes de Internet
Estimaciones basadas en modelos
Índice de diversidad filogenética (Referencia
82804): PD
50 = 1.0002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00589 (0.00251 - 0.01382), b=3.12 (2.90 - 3.34), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Nivel trófico (Referencia
69278): 3.4 ±0.51 se; based on food items.
Resiliencia (Referencia
120179): Medio, población duplicada en un tiempo mínimo de 1.4-4.4 años (tm=2-3; tmax=4).
Vulnerabilidad pesquera (Ref.
59153): Low to moderate vulnerability (30 of 100).
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