| Table1. Natural food fluctuations (% of total food intake) of different size classes of Atlantic salmon, Salmo salar | |||||
| Type of food | Life stage/size class | ||||
| Fry | Fingerling | Juvenile | Grower | Broodstock | |
| Invertebrates | 100 | 100 | 85 | 25 | 25 |
| Fish | 15 | 75 | 75 | ||
| Source: Scott & Crossman (1973) | |||||
| Approximate indicative weight of different size classes of Atlantic salmon | |||||
| Life stage | Weight (g) | ||||
| Fry | 0.3�1.0 | ||||
| Fingerling | 1.0�5.0 | ||||
| Parr | 5.0�30 | ||||
| Smolt | 30�80 | ||||
| Grower | 100�4 000 | ||||
| Adult | >4 000 | ||||