S. No Prey items Occurrence Volume ViQi Index preponderance ‘I’= VIOI × 100/ÓVIOI Grading
1 Crustaceans 15.3 19.8 302.94 30.15 I
2 Fish 12.7 16.3 207.01 20.60 II
3 Amphipods 3.6 5.8 20.88 2.07 VIII
4 Isopods 4.3 4.3 18.49 1.84 X
5 Polychaetes 3.5 2.6 9.10 0.90 XII
6 Nematodes 4.2 1.9 7.98 0.79 XIII
7 Phytoplankton 5.4 2.3 12.42 1.23 XI
8 Zooplankton 6.2 3.2 19.84 1.97 IX
9 Gastropods 2.8 1.3 3.64 0.36 XIV
10 Bivalves 5.2 4.8 24.96 2.48 VII
11 Sand 6.9 5.2 35.88 3.57 VI
12 Detritus 8.1 12.6 102.06 10.15 IV
13 Miscellaneous 13.5 14.3 193.05 19.21 III
14 Supplementary feeds 8.3 5.6 46.48 4.62 V
Table 2: Index of Preponderance of shrimp P. monodon during April-2012.