بينات المظهر الخارجي للـ Luciobarbus zayanensis
مفاتيح التعريف
Abnormalities
المرجع الرئيسي Doadrio, I., M. Casal-López, S. Perea and A. Yahyaoui, 2016
المظهر يشير الى
Bones in OsteoBase

Sex attributes

أعضاء متخصصه
مظاهر مختلقة
الوان مختلفة
ملاحظات The pectoral and ventral fins are larger in males than in females; the pectoral fin length is 76-83% of head length in females and 72-90% of head length in males; the ventral fin length is 65.5-74% of head length in females and 65.5-85% of head length in males (Ref. 107618). Males exhibited numerous equal-sized nuptial tubercles distributed over the body and fins (Ref. 107618).

الخصائص الوصفية للصغار والبالغين

ملامح مذهلة
شكل الجسم الجانبي elongated
المقطع العرضي
شكل ظهر الراس
نوع العيون
نوع الفم/ الخطم
موقع الفم
Type of scales
التشخيص

Diagnosis: This species differs from other species of Luciobarbus by the following combination of characters: 49-53 scales along the lateral line, 8.5-9.5 scales above lateral line, and 5.5-7.5 scales below lateral line; the last single ray of the dorsal fin is strongly ossified with a maximum width of 12-14.5% of its length; the last single dorsal fin ray is densely denticulate along its length and, in adults, the number of denticulations is maller than 23; the skull is narrow, with the width of the ethmoid bone smaller than its length; the inter-orbital distance is 1.2-1.9 times eye diameter; the pharyngeal teeth formula in adults is 4.3.2; the number of vertebrae is 41-43; large deep caudal peduncle 2.1-2.6% of anal peduncle length; and lachrymal bone with narrow posterior segment, a manubrium (Ref. 107618).

Description: The body is elongated with maximum body depth 18-24% of standard length in males and 21-24% in females (Ref. 107618). The head is typically sharp and narrow; the inter-orbital distance is 1.2-1.9 times the eye diameter in males and 1.4-1.9 times in females; the skull is narrow, with the ethmoid bone longer than wide; the frontal bones are narrower relative to other reophilic barbs, notably in the anterior part; infraorbital bones are narrow, and the lachrymal bone is longer than in other reophilic barbs and possesses a long manubrium; the height of the manubrium is 10-13% the lachrymal bone length; the kinethmoid bone is more robust than the one found in other reophilic barbs (Ref. 107618). Thick lips and barbels with granular appearance; the first pair of barbels is short and positioned at the anterior extreme of the mouth, reaching the insertion of the second pair of barbels; the second pair of barbels is thick and reaches the posterior edge of the eye; the anterior barbel length is 20.1-29.9%, and the second 29.7-39.5% of head length; the snout is prominent, with preorbital length 10.9-12.1% of standard length in females and 10.6-13.2% of standard length in males; the preorbital length is greater than the postorbital length (Ref. 107618). The dorsal fin is located posteriorly on the body, with the predorsal distance being 48.9-52.5% of standard length in females and 48.5-52.5% in males; the profile of the dorsal fin is concave, with the last single ray of the dorsal fin ossified with few and strong denticulations; dorsal fin with 3-5 unbranched rays and 8 branched rays; anal fin with 3 unbranched rays and 5 branched rays; pectoral fin with 1 unbranched ray and 15-16 branched rays; ventral fin with 1 unbranched ray and 6 branched rays; the caudal fin length is 20-23% of standard length in females and 18.4-24.5% of standard length in males (Ref. 107618). Number of scales on the lateral line 49-53; 8.5-9.5 scales above lateral line; 5.5-7.5 scales below lateral line (Ref. 107618). The caudal peduncle is elongated, and the least body depth is 11-11.9% of standard length in females and 9.5-11.8% of standard length in males; the length of the anal caudal peduncle is 2.1-2.3 times the height of the anal peduncle in females and 2.1-2.6 times in males (Ref. 107618). Pharyngeal teeth in adults 4.3.2 (Ref. 107618). Number of gill rakers 13-16; number of vertebrae 41-43 (Ref. 107618).

Colouration: The colouration is brownish with a paler ventral area and some black spots along the body (Ref. 107618).

سهل التعريف

Meristic characteristics of Luciobarbus zayanensis

الخطوط الجانبية متقطع: No
Scales on lateral line 49 - 53
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 8.5 - 9.5
Scale rows below lateral line 5.5 - 7.5
Scales around caudal peduncle
Barbels 4
الشقوق الخيشومية ( القروش/ اسماك الري)
Gill rakers
على الطرف السفلي
على الطرف العلوي
المجموع 13 - 16
فقرات
قبل الشرج
المجموع 41 - 43

زعانف

الزعنفة الظهرية

السمات no striking attributes
عدد الزعانف 1
Finlets No. Dorsal   
Ventral  
ادوات اللأشواك 0 - 0
مجموع الأشعة اللينة 11 - 13
Adipose fin absent

الزعنفة الذيلية

السمات forked; more or less normal

الزعنفة الشرجية

عدد الزعانف 1
ادوات اللأشواك 0 - 0
مجموع الأشعة اللينة 8 - 8

Paired fins

Pectoral السمات  more or less normal
اشواك     0
اشعة لينة   16 - 17
Pelvics السمات  more or less normal
الموقع    abdominal  beneath origin of D1
اشواك     0
اشعة لينة   7 - 7
العودة الي البحث
التعليقات و التصحيح
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