S. No Prey items Occurrence Volume ViQi Index preponderance ‘I’= VIOI × 100/ÓVIOI Grading
1 Crustaceans 14.3 23.5 336.05 34.9 I
2 Fish 10.9 14.3 155.87 17.2 II
3 Amphipods 4.3 2.5 10.75 1.11 XII
4 Isopods 5.4 3.1 16.74 1.74 X
5 Polychaetes 4.6 4.3 19.78 2.05 VIII
6 Nematodes 4.7 2.1 9.87 1.02 XIV
7 Phytoplankton 5.2 3.5 18.2 1.89 IX
8 Zooplankton 6.3 6.3 39.69 4.12 VI
9 Gastropods 4.5 3.1 13.95 1.45 XI
10 Bivalves 4.3 2.3 9.89 1.03 XIII
11 Sand 6.1 5.1 31.11 3.23 VII
12 Detritus 7.9 10.5 82.95 8.6 IV
13 Miscellaneous 12.3 13.2 162.36 16.8 III
14 Supplementary feeds 9.2 6.2 57.04 5.92 V
Table 1: Index of Preponderance of shrimp P. monodon during March-2012.