| Food    items | 
        autumn | 
        winter | 
        spring | 
        summer | 
       
      
        | %Cn | 
        %O | 
        %IRI | 
        %Cn | 
        %O | 
        %IRI | 
        %Cn | 
        %O | 
        %IRI | 
        %Cn | 
        %O | 
        %IRI | 
       
      
        | Coleoptera | 
        9.6 | 
        37.14 | 
        10.91 | 
        *** | 
        *** | 
        *** | 
        12.4 | 
        40 | 
        11.46 | 
        15.8 | 
        38.57 | 
        12.52 | 
       
      
        | Bivalvia | 
        3.5 | 
        15.71 | 
        4.48 | 
        5.3 | 
        18.57 | 
        5.55 | 
        2.3 | 
        14.29 | 
        3.63 | 
        2.1 | 
        14.29 | 
        3.77 | 
       
      
        | Gastropoda  | 
        3.2 | 
        15.71 | 
        4.41 | 
        4.5 | 
        20.00 | 
        5.70 | 
        1 | 
        21.43 | 
        4.91 | 
        *** | 
        *** | 
        *** | 
       
      
        | Shrimp | 
        10.4 | 
        31.43 | 
        9.76 | 
        7.9 | 
        30.00 | 
        8.81 | 
        7 | 
        32.86 | 
        8.72 | 
        6.3 | 
        28.57 | 
        8.03 | 
       
      
        | Amphipoda | 
        4.9 | 
        22.86 | 
        6.48 | 
        3.5 | 
        25.71 | 
        6.79 | 
        3.8 | 
        24.29 | 
        6.14 | 
        2.3 | 
        25.71 | 
        6.45 | 
       
      
        | nematodes | 
        *** | 
        *** | 
        *** | 
        6.5 | 
        27.14 | 
        7.82 | 
        8 | 
        32.86 | 
        8.94 | 
        5.3 | 
        31.43 | 
        8.46 | 
       
      
        | tilapians | 
        14.3 | 
        55.71 | 
        16.34 | 
        16.6 | 
        60.00 | 
        17.81 | 
        14.9 | 
        57.14 | 
        15.76 | 
        15.2 | 
        52.86 | 
        15.67 | 
       
      
        | Clarias    sp. | 
        9.4 | 
        35.71 | 
        10.53 | 
        9.3 | 
        32.86 | 
        9.80 | 
        9.6 | 
        30.00 | 
        8.66 | 
        10.1 | 
        28.57 | 
        8.90 | 
       
      
        | parts    of fishes | 
        36 | 
        61.43 | 
        22.73 | 
        35 | 
        57.14 | 
        21.43 | 
        33 | 
        54.29 | 
        19.09 | 
        34 | 
        58.57 | 
        21.32 | 
       
      
        | Vegetable    mat. | 
        8.7 | 
        52.86 | 
        14.36 | 
        11.4 | 
        58.57 | 
        16.27 | 
        8 | 
        50.00 | 
        12.69 | 
        8.9 | 
        55.71 | 
        14.88 | 
       
      
        | Digested    food | 
        *** | 
        28.57 | 
        *** | 
        *** | 
        27.14 | 
        *** | 
        *** | 
        27.14 | 
        *** | 
        *** | 
        25.71 | 
        *** | 
       
      |