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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.
Environment: milieu / climate zone / نطاق العمق / distribution range
البيئة
; المياه العذبة القاع; نطاق العمق 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.
Length at first maturity / الحجم / وزن / العمر
النضج: Lm 11.4, range 8 - 15.4 cm
Max length : 20.0 cm TL ذكر/ مختلط الجنس; (Ref. 5723); common length : 8.8 cm TL ذكر/ مختلط الجنس; (Ref. 12193); العمر: 4 سنين (Ref. 10348)
الأشواك الظهرية (المجموع) : 1 - 3; الأشعة الظهرية الناعمة (المجموع) : 9 - 11; شوكة شرجية: 1; أشعه شرجية لينه: 5 - 9; فقرات: 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.
Occurs in lakes, deep flowing pools of creeks, and rivers (Ref. 5723). Usually found over sand (Ref. 5723). Moves into the shallows of lakes at night to feed and moves back to deeper water as dawn approaches (Ref. 1998). Feeds 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)
IUCN Red List Status (Ref. 130435: Version 2025-1)
استخدامات بشرية
مصائد: غير ذات اهمية; حوض مائي: احواض مائية عامة; طعم: occasionally
أدوات
تقارير خاصة
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مصادر علي الأنترنت
Estimates based on models
Phylogenetic diversity index (مرجع
82804): PD
50 = 1.0002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00589 (0.00248 - 0.01401), b=3.12 (2.91 - 3.33), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
مستوى غذائي (مرجع
69278): 3.4 ±0.51 se; based on food items.
المرونه (مرجع
120179): وسيط, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 1.4-4.4 سنة (tm=2-3; tmax=4).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (30 of 100).
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