| Anesthesia |
A1 | Normal swimming; opercular movement and normal general movement |
A2 | Swimming speed slowed; rolling from side to side |
A3 | Partial loss of equilibrium; swimming erratic |
A4 | Complete loss of equilibrium; swimming perfectly inside out; pectoral fin, pelvic fin and dorsal fin movement stop |
A5 | Little sedation; anal fin and tail fin movement stop |
A6 | Perfect sedation; only opercular movement |
A7 | Opercular movement ceased |
| Recovery |
R1 | Resume opercular movement |
R2 | Preferential movement of pectoral fin and tail fin |
R3 | Dorsal fin, pelvic fin and anal fin movement |
R4 | Swimming perfectly inside out |
R5 | Swimming erratic; recovery of balance |
R6 | Normal swimming; responsiveness to visual stimuli |