| Table 1a. Natural food fluctuations (% of total food intake) of different size classes of mrigal, Cirrhinus mrigala in open water (river, stream) | ||||
| Food items | Percentage composition of food | |||
| Fingerlings | Juveniles | Adults | ||
| Green algae | 5.1 | 5.9 | 14.2 | |
| Diatoms | 4.3 | 8.2 | 10.8 | |
| Blue-green algae | 1 | 4 | 6.3 | |
| Desmids | 4.1 | 4 | 2 | |
| Phytoflgellates | 3 | 6.1 | 3.9 | |
| Algal spores and zygotes | 1.5 | 3.6 | 5.9 | |
| Macrovegetation | - | 2.1 | 1 | |
| Decayed organic matter | 12.3 | 22.3 | 30 | |
| Protozoa | 6.3 | 4.3 | 1.3 | |
| Rotifers | 19.1 | 8.3 | 2 | |
| Crustaceans | 27.3 | 15.1 | 2.5 | |
| Sand and mud | 1.6 | 16.1 | 20.1 | |
| Table 1b. Natural food fluctuations (% of total food intake) of different size classes of mrigal, Cirrhinus mrigala in closed water (e.g., pond, lake) | ||||
| Food items | Percentage composition of food | |||
| Fingerlings | Juveniles | Adults | ||
| Green algae | 3 | 6.2 | 10 | |
| Diatoms | 6.5 | 12 | 13 | |
| Blue-green algae | 2 | 7 | 9.5 | |
| Desmids | 6 | 5.1 | 4.1 | |
| Phytoflgellates | 8.5 | 8.1 | 7 | |
| Algal spores and zygotes | 3.7 | 3 | 3.8 | |
| Macrovegetation | 1.2 | 1 | ||
| Decayed organic matter | 15.5 | 19.5 | 31.1 | |
| Protozoa | 6 | 5 | 2.5 | |
| Rotifers | 15.2 | 10.1 | 3 | |
| Crustaceans | 16.4 | 10 | 2 | |
| Sand and mud | 16 | 13 | 14 | |
| Data source : Khan (1972) | ||||