Food Items Numerical Method Occurrence Method
Number % Number %
Algae        
Clostridium strigosum 878 24.4 26 3.9
Tetraspora gelatinosa 914 25.4 50 7.6
Oscillatoria tenuis 278 7.7 22 3.3
Diatoms        
Cyclotella sp 18 0.5 6 0.9
Syndera fasciculata 82 2.3 34 5.1
Tabellaria fenestrata 34 0.9 28 4.2
Protozoa        
Vorticella sp 12 0.3 6 0.9
Rotifera        
Trichocerca sp 28 0.8 24 3.6
Insecta        
Dixa sp 60 1.7 8 1.2
Polycentropus sp 32 0.9 8 1.2
Plant materials 1260 35.0 196 29.6
Unidentified mass - - 144 21.8
Table 8: Summary of stomach contents of M. macrobrachion from Lagos Lagoon.