Stomach Content Analysis (SCA) Oreochromis niloticus Oreochromis niloticus Oreochromis niloticus Coptodon rendalli Coptodon rendalli Coptodon rendalli Statistics
Number of fish(n) Size class (mm. TL) Mean±SD Number of fish Size class (mm. TL) Mean±SD
Stomach fullness 46 <50 1.9 ± 1.4 48 <50 2.5 ± 1.2 U=129,n=89, p=0012
65 51-100 3.0 ± 0.9 79 51-100 3.6 ± 0.5 U=153,n=81, p=0165
90 101-150 3.5 ± 0.5 39 101-150 3.5 ± 0.6 U=144,n=129, p=0283
Vacuity index 46 <50 7.2 48 <50 16.7 U=338,n=133, p=0.001
65 51-100 31 79 51-100 21.4 U=319,n=127, p=0128
90 101-150 51.4 39 101-150 21.5 U=387,n=141, p=0172
Levin’s index 46 <50 1.4 ± 1.4 48 <50 1.5 ± 1.2 U=216,n=91, p=01397
65 51-100 2.0 ± 0.3 79 51-100 2.6 ± 0.5 U=291,n=87, p=0.001
90 101-150 2.5 ± 1.5 39 101-150 2.4 ± 0.4 U=288,n=101, p<0001