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Rhinichthys osculus (Girard, 1856)

Speckled dace
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Image of Rhinichthys osculus (Speckled dace)
Rhinichthys osculus
Picture by The Native Fish Conservancy


United States (contiguous states) country information

Common names: Speckled dace
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: bait: yes;
Comments: Most ubiquitous fish in western USA. Occurs in many isolated western drainages and has diversified tremendously. Treated as a complex of subspecies, but its morphological variations and distribution are poorly known. The following are protected as endangered subspecies: Rhinichthys osculus nevadensis in Ash Meadows, Nevada; Rhinichthys osculus oligoporus in Clover Valley, Nevada; Rhinichthys osculus lethoporus in Independence Valley, Nevada; and Rhinichthys osculus thermalis in Kendall Warm Springs, Wyoming. The Foskett speckled dace, Rhinichthys osculus subspecies, in Foskett Spring, Warner Basin, Oregon is also protected as threatened subspecies (Ref. 86798). Of some importance as forage species and widely used as bait fish. Also Ref. 5723. Status of threat of the following subspecies: 1). Rhinichthys osculus lariversi: endangered. Criteria: 1,4,5; 2). Rhinichthys osculus lethoporus, Rhinichthys osculus nevadensis, and Rhinichthys osculus oligoporus: endangered; status same as 1989. Criteria: 1,4,5; 3). Rhinichthys osculus moapae: threatened; status same as 1989. Criteria: 1,3,4; 4). Rhinichthys osculus reliquus: extinct. Criteria: 1,4,5; 5). Rhinichthys osculus thermalis: endangered; status declined since 1989. Criteria: 3,5 ; 6). Rhinichthys osculus velifer: endangered. Criteria: 1,5 (http://fisc.er.usgs.gov/afs/) (Ref. 81264).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/us.html
National Fisheries Authority: http://www.nmfs.gov
Occurrences: Occurrences Point map
Main Ref: Page, L.M. and B.M. Burr, 2011
National Database:

Common names from other countries

رده بندی / Names اسامي عام | مترادف | Catalog of Fishes(جنس, گونه ها) | ITIS | CoL | WoRMS | Cloffa

> Cypriniformes (Carps) > Leuciscidae (Minnows) > Pogonichthyinae
Etymology: Rhinichthys: Greek, rhinos = nose + Greek, ichthys = fish (Ref. 45335);  osculus: osculus meaning small-mouthed (Ref. 1998).
  More on author: Girard.

Environment: milieu / climate zone / depth range / distribution range بوم شناسي

; آب شيرين نزديك كف زي; pH range: 6.8 - 7.8; dH range: 5 - 25.   Temperate; 9°C - 11°C (Ref. 3672); 49°N - 31°N

پراكنش كشورها | مناطق سازمان خوار و بار جهاني (FAO) | Ecosystems | ظهور | Point map | معرفي | Faunafri

North America: western drainages (Pacific and endorheic) from Columbia River in British Columbia, Canada to Colorado River in Arizona and New Mexico, USA and south into Sonora, Mexico.

Size / Weight / سن

Maturity: Lm ?  range ? - ? cm
Max length : 11.0 cm TL جنس نر / بدون خواص جنسي; (Ref. 86798); common length : 6.3 cm TL جنس نر / بدون خواص جنسي; (Ref. 12193)

توصيف مختصر ريخت شناسي | ريخت ستجي بوسيله انداره گيري

خارهاي باله پشتي (کل): 0; شعاع نرم باله پشتي (کل): 8-9; خارهاي باله مخرجي 0; شعاع نرم باله مخرجي: 6 - 7; مهره ها: 37 - 38. Body elongate, greatest depth in front of dorsal fin. Head bluntly triangular, a small but distinct hump present behind the head. Mouth inferior, sucker-like, lower jaw with fleshy lip. Overall coloration gray or gray-brown with scattered and vague darker flecks, usually above midline of sides; lower sides and belly somewhat yellowish or creamy white. A faint lateral band present.

زيست شناسي     واژه نامه (بعنوان مثال epibenthic)

Occurs in rocky riffles, runs and pools of headwaters, creeks and small to medium rivers; rarely in lakes (Ref. 5723, 86798).

Life cycle and mating behavior بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)

مآخذ اصلی Upload your references | مراجع | هماهنگ كننده | همكاران

Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)

وضعيت در فهرست قرمز IUCN (Ref. 130435)

  حداقل نگرانی (LC) ; Date assessed: 10 September 2018

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

خطر برای انسان ها

  Harmless




استفاده انسانی

طعمه: usually
FAO(Publication : search) | FishSource |

اطلاعات بيشتر

اسامي عام
مترادف
سوخت و ساز
شکارچیان
سم شناسي بوم زيستي
تولید مثل
بلوغ
تخم ریزی
Fecundity
تخم ها
نمو تخم
Age/Size
رشد
طول - وزن
طول - طول
نوسانات طولی
ريخت ستجي بوسيله انداره گيري
ريخت شناسي
توزاد ( لارو)
پويايي لاروي
بازسازی
فراواني
مراجع
آبزي پروري
نمايه آبزي پروري
نژادها
ژنتيك
Electrophoreses
وارث
بيماري ها
فرآوری
Mass conversion
همكاران
عکس ها
Stamps, Coins Misc.
صداها
سيگواترا
سرعت
نوع شناگری
منطقه آبششي
Otoliths
مغزها
بینایی

ابزارها

گزارش های ويژه

بارگيری XML

منابع اينترنتي

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5020   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00501 (0.00232 - 0.01084), b=3.13 (2.94 - 3.32), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  2.9   ±0.36 se; based on food items.
جهندگی (Ref. 120179):  زياد, كمينه زمان لازم براي دو برابر شدن جمعيت ، كمتر از 15 ماه (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).