River Sapiston (Black Bourn)
22 fish species have been recorded at 12 locations along the River Sapiston (Black Bourn).
- Fish species
- 22
- Places surveyed
- 12
- Survey visits
- 63
- Records span
- 1988–2024
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 |
|---|---|---|---|---|---|
| DaceLeuciscus leuciscus | 12 | 2024 | 3,843 | Median: 13.3 cm3,266 fish measuredLargest measured dace: 26.4 cm | — |
| RoachRutilus rutilus | 11 | 2024 | 3,314 | Median: 10.3 cm2,899 fish measuredLargest measured roach: 31.3 cm | — |
| GudgeonGobio gobio | 11 | 2024 | 1,928 | Median: 8.8 cm1,692 fish measuredLargest measured gudgeon: 13.8 cm | — |
| PikeEsox lucius | 11 | 2024 | 487 | Median: 29.3 cm383 fish measuredLargest measured pike: 91.8 cm | — |
| ChubLeuciscus cephalus | 11 | 2018 | 1,754 | Median: 18.3 cm1,651 fish measuredLargest measured chub: 51.7 cm | — |
| European eelAnguilla anguilla | 11 | 2012 | 204 | Median: 56.7 cm3 fish measuredLargest measured european eel: 77.9 cm | Median: 14.5 oz (0.41 kg)3 fish weighedLargest measured: 2 lb 0 oz (0.908 kg) |
| BullheadCottus gobio | 10 | 2024 | 219 | Median: 6.1 cm96 fish measuredLargest measured bullhead: 8.9 cm | — |
| MinnowPhoxinus phoxinus | 10 | 2024 | 403 | Median: 5.7 cm269 fish measuredLargest measured minnow: 8.4 cm | — |
| PerchPerca fluviatilis | 9 | 2018 | 293 | Median: 8.7 cm276 fish measuredLargest measured perch: 29.8 cm | — |
| RuddScardinius erythrophthalmus | 9 | 2012 | 37 | Median: 13.3 cm37 fish measuredLargest measured rudd: 24.8 cm | — |
| Stone loachBarbatula barbatula | 8 | 2024 | 183 | Median: 8.3 cm100 fish measuredLargest measured stone loach: 11.2 cm | — |
| 3-spined sticklebackGasterosteus aculeatus | 8 | 2024 | 100 | Median: 3.9 cm55 fish measuredLargest measured 3-spined stickleback: 6.3 cm | — |
| Common breamAbramis brama | 7 | 2018 | 273 | Median: 30.8 cm273 fish measuredLargest measured common bream: 47.3 cm | — |
| TenchTinca tinca | 7 | 2009 | 10 | Median: 16.3 cm9 fish measuredLargest measured tench: 25.8 cm | — |
| Spined loachCobitis taenia | 6 | 2012 | 15 | Median: 6.3 cm12 fish measuredLargest measured spined loach: 8.9 cm | — |
| Brown / sea troutSalmo trutta | 2 | 2018 | 18 | Median: 29.8 cm13 fish measuredLargest measured brown / sea trout: 54.7 cm | — |
| RuffeGymnocephalus cernuus | 2 | 2012 | 5 | Median: 9.5 cm4 fish measuredLargest measured ruffe: 14.3 cm | — |
| Brook lampreyLampetra planeri | 2 | 1995 | 3 | — | — |
| 10-spined sticklebackPungitius pungitius | 2 | 2012 | 2 | Recorded length: 2.6 cm1 fish measured | — |
| Crucian carpCarassius carassius | 2 | 1992 | 9 | Median: 15.8 cm9 fish measuredLargest measured crucian carp: 22.3 cm | — |
| Silver breamAbramis bjoerkna | 1 | 1995 | 3 | Median: 30.3 cm3 fish measuredLargest measured silver bream: 32.3 cm | — |
| Common carpCyprinus carpio | 1 | 1988 | 12 | Median: 45.6 cm12 fish measuredLargest measured common carp: 55.8 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 Sapiston (Black Bourn). 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 →