Food item (Cn) (O)  (IRI) bayad docmac bayad docmac bayad docmac Insects 12.5 21.4 38.57 51.72 10.58 24.23 Diptera ------------- 7.3 ------------ 36.21 ------------ 8.33 Coleoptera 12.5 10.2 38.57 44.83 10.58 10.53 Odonata ------------ 3.9 ------------ 24.14 ------------ 5.37 Invertebrates 19.5 33.7 45.71 62.07 28.89 35.49 Mollusks 3.8 11.8 24.29 25.86 7.89 7.21 Bivalvia 2.3 11.8 15.71 25.86 3.73 7.21 Gastropoda 1.5 ------------ 18.57 ------------ 4.16 ------------ Crustaceans 10.4 15.6 35.71 62.07 13.99 21.47 Shrimps 7 10.5 31.43 51.72 7.96 11.91 Amphipods 3.4 5.1 25.71 44.83 6.03 9.56 Other invertebrate 5.3 6.3 28.57 29.31 7.01 6.82 Nematodes 5.3 ------------ 28.57 ------------ 7.01 ------------ Cephalopods ------------ 6.3 ------------ 29.31 ------------ 6.82 Fishes 59.3 39.5 67.14 70.69 42.16 25.05 Tilapians 16.1 26.5 55.71 53.45 14.87 15.30 Clarias sp. 10.2 ------------ 30.00 ------------ 8.33 ------------ Parts of fishes 33 13 58.57 37.93 18.96 9.75 Vegetable mat. 8.7 5.4 52.86 46.55 12.75 9.94 Digested food ------------ ------------ 27.14 27.59 ------------ ------------

Table 7: Major food items of B. bayad and B. docmac presents in numerical abundance (Cn), frequency of occurrence (O) and index of relative importance (IRI).