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For biochemical composition of catfish Rita rita, 60 specimens ranged from 10.1-40.0 cm and 75.0-632.0g in total length and weight respectively were collected from Indus river near Jamshoro during November 2015 - January 2016. The study on biochemical composition was enumerated from fillets of head, trunk and tail region at 3 different length groups (small, medium and large). Results of study revealed that highest % of moisture was observed from head region (84.5) followed by tail (83.6) and lowest was observed (82.5) in trunk, in case of % protein contents highest was observed from tail (12.1) followed by trunk (10.43) and lowest in head (8.33), % fat contents was observed highest in head (6.83) followed by trunk (6.7) lowest in tail (3.7) while ash was observed highest in trunk (3.1) followed by tail (2.7) and lowest in head (2.0) at each length group.
Keywords: Bio-chemical; Catfish; Rita rita; Indus river; Jamshoro