| P. lineatus | A. altiparanae | ||||||||||
| Control | Detergent | Lake | Control | Detergent | Urban Lake | ||||||
| 1st month | 5th month | 1st month | 5th month | 1st month | 1st month | 5th month | 1st month | 5th month | 1st month | 5th month | |
| Cytoplasm Vacuolization | 0 | 0 | ++ | +++ | ++++ | 0 | 0 | +++ | ++++ | +++ | ++++ |
| Vacuolized Nuclei or the Start of Vacuolization | 0 | 0 | ++ | ++ | + | 0 | 0 | + | +++ | +++ | ++ |
| Nuclei Displaced to the Periphery | + | + | ++ | +++ | ++++ | + | + | +++ | ++++ | +++ | ++++ |