Regulation 3
| Procedure | Purpose |
|---|---|
| Chemical branding | Identification |
| Freeze branding | Identification |
| Passive integrated transponder tagging/micro chipping | Identification |
| Removal or perforation of parts of the fins, adipose fins or fin rays | Identification |
| Removal of fish scales | Age determination or stock management |
| Implantation of a subcutaneous contraceptive | Controlling reproduction or general animal management |