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Test fishing: documented sizes
SLU Aqua has test-fished the water with standardised gillnets (1990). The table shows the largest individuals and the mean length recorded per species.
| Species | Largest recorded | Mean | Year | Number measured |
|---|---|---|---|---|
| Pike | 61.5 cm | 61.5 cm | 1990 | 1 |
| Whitefish | 47 cm | 33 cm | 1990 | 5 |
| Perch | 41.3 cm | 13.7 cm | 1990 | 659 |
| Burbot | 41.2 cm | 37.3 cm | 1990 | 2 |
| Roach | 26.3 cm | 20.8 cm | 1990 | 102 |
| Ruffe | 19.5 cm | 13.3 cm | 1990 | 227 |
Source: SLU Aqua · NORS (gillnet test fishing in lakes). Go to provfiske.se for everything on test fishing in Letten.