دراسة بعض الجوانب الحياتية لسمكة ألحمري Barbus Iuteus (Heckel, 1843)‎ في نهر دجلة سامراء

Abstract EN

Growth, length-weight relationships, age composition, Sex ratio, age at first maturity, foods of Himiri, Barbus luteus from Tigris river crossing Samarra city were Investigated from October 2011 to February 2012.

Von Bertalantfy' s growth models were: Lt=250{1-e0.68(t+0.81)} for male and Lt=275{1-e0.32(t+0.56)} for female, Isometric growth were identified from length-weight relationship, younger age groups dominated the catches, with identifiable ages ranged from I to IV years, Sexual ratios were unbiased and not deviate from 1:1 most fish reached sexual maturity within the second year of age, Fish was be omnivorous, The food contain were Aquatic, Algae,insects,ditoms and organic materials