Comparison of morphometric and meristic characteristics of Spirlin Alburnoides eichwaldii (De Filippi, 1863) in the Rivers of Tajan, Aras and Babolrood

In order to study and compare the morphometric and meristic characteristics of Alburnoides eichwaldii، 38، 37 and 30 specimens of this species in the Rivers of Tajan، Aras and Babolrood were captured، respectively. In total، 25 morphometric characteristics such as total length، fork length، standard length، length of fins etc and 5 meristic characteristics، such as the number of vertebrae، the number of scales on the lateral line، etc. were measured. Based on the results from this study in Tajan River، Aras and Babolrood، the mean weight، 7. 65، 4. 90 and 5. 97 (gr)، and the average total length of 80. 28، 75. 37 and 76. 96 (mm)، fork length 73. 76، 69. 18 and 71. 40 (mm) and standard length 63. 83، 60. 50 and 62. 86 (mm) respectively. Meristic characteristics of Spirlin in Tajan، Aras and Babolrood Rivers are as follows: number of vertebrae in the range of 35-41، 36-41 and 34-40، respectively. The number of scales on the lateral line of the fish in the Three Rivers Spirlin is in the range of 33-54، 40-52 and 34-51 were counted. Results of multivariate statistical techniques (PCA) and (CVA) in the morphometric characteristics of Tajan، Babolrood and Aras Rivers، somewhat detached seen. The meristic characteristics of this Type of fish in the Mentioned Rivers studied، very close together، and there was high overlap in their characteristics.