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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 / пределы глубины / distribution range
экология
; пресноводный демерсальный; пределы глубины 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 / Size / Вес / Возраст
половая зрелость: Lm 11.4, range 8 - 15.4 cm
Max length : 20.0 cm TL самец/пол неопределен; (Ref. 5723); common length : 8.8 cm TL самец/пол неопределен; (Ref. 12193); наибольший возраст (опубликованны данные): 4 годы (Ref. 10348)
Краткое описание
определительные ключи | морфология | морфометрия
колючие лучи спинного плавника (общее число) : 1 - 3; членистые (мягкие) лучи спинного плавника (общее число) : 9 - 11; колючие лучи анального плавника: 1; членистые (мягкие) лучи анального плавника: 5 - 9; позвонки: 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)
Статус Красного Списка МСОП (Ref. 130435: Version 2025-1)
Угроза для людей
Harmless
Использование человеком
рыболовство: интереса не представляет; аквариум: общественные аквариумы; наживка: occasionally
дополнительная информация
инструменты
Специальные отчеты
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ресурсы в Интернет
Estimates based on models
Phylogenetic diversity index (ссылка
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).
Trophic level (ссылка
69278): 3.4 ±0.51 se; based on food items.
устойчивость к внешним воздействиям (ссылка
120179): средний (среднего размера), минимальное время удвоения популяции 1.4-4.4 года (tm=2-3; tmax=4).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (30 of 100).
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