River Deben (Main Reaches)
16 fish species have been recorded at 27 locations along the River Deben (Main Reaches).
- Fish species
- 16
- Places surveyed
- 27
- Survey visits
- 83
- Records span
- 1987–2026
Local EA evidence
Where fish were recorded
Choose a point on the map to see what was recorded there.
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River conditions
Environment Agency evidence
Fish found in this river
Open a linked fish for detailed measurements, or use the map filter above to compare survey locations.
| Fish | Sites | Most recent | Fish counted | Measured length | Measured weight |
|---|---|---|---|---|---|
| RoachRutilus rutilus | 26 | 2026 | 10,882 | Median: 10.6 cm9,210 fish measuredLargest measured roach: 40.5 cm | — |
| PikeEsox lucius | 22 | 2026 | 1,049 | Median: 23.9 cm1,049 fish measuredLargest measured pike: 96 cm | — |
| European eelAnguilla anguilla | 18 | 2026 | 2,124 | Median: 25.9 cm172 fish measuredLargest measured european eel: 55.1 cm | Median: 1 oz (0.028 kg)172 fish weighedLargest measured: 11.5 oz (0.325 kg) |
| PerchPerca fluviatilis | 17 | 2026 | 982 | Median: 11.3 cm956 fish measuredLargest measured perch: 30.2 cm | — |
| Stone loachBarbatula barbatula | 15 | 2026 | 333 | Median: 7.8 cm333 fish measuredLargest measured stone loach: 17.3 cm | — |
| DaceLeuciscus leuciscus | 15 | 2025 | 1,390 | Median: 13.5 cm1,390 fish measuredLargest measured dace: 26.9 cm | — |
| GudgeonGobio gobio | 12 | 2025 | 548 | Median: 5.5 cm305 fish measuredLargest measured gudgeon: 13 cm | — |
| BullheadCottus gobio | 10 | 2026 | 296 | Median: 5.9 cm296 fish measuredLargest measured bullhead: 9.4 cm | — |
| RuddScardinius erythrophthalmus | 8 | 2025 | 41 | Median: 9.5 cm41 fish measuredLargest measured rudd: 17 cm | — |
| 3-spined sticklebackGasterosteus aculeatus | 7 | 2026 | 1,660 | Median: 3.4 cm295 fish measuredLargest measured 3-spined stickleback: 5.3 cm | — |
| Common breamAbramis brama | 7 | 2025 | 152 | Median: 11.7 cm72 fish measuredLargest measured common bream: 30.9 cm | — |
| TenchTinca tinca | 7 | 1997 | 18 | Median: 30.5 cm18 fish measuredLargest measured tench: 42.3 cm | — |
| 10-spined sticklebackPungitius pungitius | 5 | 2026 | 39 | Median: 4.1 cm39 fish measuredLargest measured 10-spined stickleback: 5.7 cm | — |
| Brown / sea troutSalmo trutta | 1 | 2024 | 7 | Median: 15.6 cm7 fish measuredLargest measured brown / sea trout: 20.2 cm | — |
| ChubLeuciscus cephalus | 1 | 2024 | 4 | Median: 3 cm4 fish measuredLargest measured chub: 3.4 cm | — |
| Silver breamAbramis bjoerkna | 1 | 1994 | 2 | Median: 9.9 cm2 fish measuredLargest measured silver bream: 14.2 cm | — |
EA surveys have recorded these fish at particular sites and times. Absence from a survey is not evidence that a species is absent from the river. Every valid individual length and weight is retained, with its sample size shown.
Useful context
This page follows survey locations along the main River Deben (Main Reaches). Tributaries and unrelated rivers with similar names are kept separate.
The map shows past fish records, not fishing access or a promise of what you’ll catch today.
How RiverFish handles the data →