| Behavior | concentration (mg/l) |
|
|
|
|
|
| Erratic swimming | Control | 50 | 100 | 150 | 200 | 250 |
| Loss of reflex | - | + | + | + | + | + |
| Hyperventilation | - | + | + | + | + | + |
| Motionless state | - | + | + | + | + | + |
| Discoloration | - | + | + | + | + | + |