Rhynchobatus immaculatus, Taiwanese Wedgefish

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Rhynchobatus immaculatus Last, ho & Chen, 2013

Taiwanese Wedgefish
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Image of Rhynchobatus immaculatus (Taiwanese Wedgefish)
Rhynchobatus immaculatus
No image available for this species;
drawing shows typical fish in this Family.

رده بندی / Names اسامي عام | مترادف | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

> Rhinopristiformes (Shovelnose rays) > Rhinidae (Wedgefishes)
Etymology: Rhynchobatus: Greek, rhingchos = snout + Greek, batis, -idos = a sting ray (Raja sp.) (Ref. 45335);  immaculatus: Name from Latin 'im' meaning not and 'macula' for spot, mark; based on the lack of a dark pectoral marking (rather than any white spots) which is otherwise present in small individuals of other nominal species of Rhynchobatus.

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

; دريايي.   Subtropical; 23°N - 25°N, 120°E - 122°E (Ref. 114953)

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

Northwest Pacific: confirmed from Taiwan; probably more widespread.

Size / Weight / سن

Maturity: Lm ?  range ? - ? cm
Max length : 99.0 cm TL جنس نر / بدون خواص جنسي; (Ref. 94805)

توصيف مختصر ريخت شناسي | ريخت ستجي بوسيله انداره گيري

This medium-sized species is distinguished by the following set of characters: snout is broad, and wedge-shaped; preoral snout 19-21% TL; small eye, its length 4.1-4.5 in preorbital snout; interorbital space 2.6-2.9 in preorbital snout; about 48 tooth rows; no spines from snout; supraorbital spines are small, well differentiated, and extending from preorbit to beyond end of spiracle; predorsal spines are relatively well developed; 2 disjunct rows of 6-9 small scapular spines on each side of the disc; predorsal space 48-49% of total length; origin of the first dorsal fin is well behind origin of pelvic-fin bases; total pectoral-fin radials 65-68; vertebrae with 28-30 monospondylous precaudal centra, 124-131 precaudal free centra, 38-42 diplospondylous caudal (free) centra, 165-170 total free centra, 179-184 total centra (including synarcual centra). Colouration: dark greenish brown dorsally with a few white spots scattered on pectoral disc; no black pectoral marking; prominent row of white spots start just forward of a single white spot (above pelvic-fin origin) and coalescing posteriorly to form a white mid-lateral line on tail; orbital membrane is white with dark bar over eye; no alternating light and dark markings on the interorbital space (Ref. 94805).

زيست شناسي     واژه نامه (بعنوان مثال epibenthic)

A benthic species that was recently discovered and not well known, but apparently lives in shallow water on the continental shelf. Probably feeds on bottom-dwelling crustaceans and fishes (Ref. 114953). Specimens caught are all immature that most probably the maximum length of this medium-size wedgefish could be less than 150 cm TL (Ref. 94805).

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

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

Last, P.R., H.-H. Ho and R.-R. Chen, 2013. A new species of wedgefish, Rhynchobatus immaculatus (Chondrichthyes: Rhynchobatidae), from Taiwan. Zootaxa 3752(1):185-198. (Ref. 94805)

وضعيت در فهرست قرمز IUCN (Ref. 120744)


CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

خطر برای انسان ها

  Harmless





استفاده انسانی

FAO(Publication : search) | FishSource |

اطلاعات بيشتر

كشورها
مناطق سازمان خوار و بار جهاني (FAO)
Ecosystems
ظهور
معرفي
Stocks
بوم شناسي
عادت غذايي
اقلام غذايي
مصرف غذايي
سهمیه
اسامي عام
مترادف
سوخت و ساز
شکارچیان
سم شناسي بوم زيستي
تولید مثل
بلوغ
تخم ریزی
Spawning aggregation
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
تواتر آلل ها
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. 82805):  PD50 = 0.5049   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.5   ±0.6 se; Based on size and trophs of closest relatives
جهندگی (Ref. 120179):  .
آسيب پذيری (Ref. 59153):  Moderate to high vulnerability (50 of 100) .