Table 3

S. No	Prey items	Occurrence	Volume	V_iQ_i	Index preponderance ‘I’= V_IO_I × 100/ÓV_IO_I	Grading
1	Crustaceans	16.4	21.5	352.60	34.99	I
2	Fish	13.5	14.6	197.10	19.56	II
3	Amphipods	4.8	5.2	24.96	2.47	VII
4	Isopods	6.3	3.1	19.53	1.93	IX
5	Polychaetes	4.7	2.7	12.69	1.25	XI
6	Nematodes	5.9	3.2	18.88	1.87	X
7	Phytoplankton	5.7	1.7	9.69	0.96	XII
8	Zooplankton	7.1	6.3	44.73	4.43	VI
9	Gastropods	2.5	1.8	4.50	0.44	XIV
10	Bivalves	4.1	2.3	9.43	0.93	XIII
11	Sand	3.8	6.4	24.32	2.41	VIII
12	Detritus	6.5	8.5	55.25	5.48	IV
13	Miscellaneous	11.5	16.4	188.6	18.71	III
14	Supplementary feeds	7.2	6.3	45.36	4.50	V

Table 3: Index of Preponderance of shrimp P. monodon during May-2012.