River Blackwater
24 fish species have been recorded at 24 locations along the River Blackwater.
- Fish species
- 24
- Places surveyed
- 24
- Survey visits
- 291
- Records span
- 1984–2023
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 | 24 | 2023 | 21,334 | Median: 12 cm21,334 fish measuredLargest measured roach: 39 cm | — |
| ChubLeuciscus cephalus | 24 | 2023 | 4,582 | Median: 27.3 cm4,582 fish measuredLargest measured chub: 54.8 cm | — |
| GudgeonGobio gobio | 24 | 2023 | 6,461 | Median: 11.3 cm6,461 fish measuredLargest measured gudgeon: 19.9 cm | — |
| European eelAnguilla anguilla | 24 | 2023 | 4,315 | Median: 45 cm1,963 fish measuredLargest measured european eel: 85 cm | Median: 5.3 oz (0.1505 kg)1,934 fish weighedLargest measured: 2 lb 12.1 oz (1.25 kg) |
| PerchPerca fluviatilis | 24 | 2023 | 3,250 | Median: 13.9 cm3,250 fish measuredLargest measured perch: 39.2 cm | — |
| DaceLeuciscus leuciscus | 23 | 2023 | 11,234 | Median: 15.4 cm11,234 fish measuredLargest measured dace: 28.8 cm | — |
| PikeEsox lucius | 23 | 2023 | 2,944 | Median: 22.9 cm2,944 fish measuredLargest measured pike: 96 cm | — |
| MinnowPhoxinus phoxinus | 22 | 2023 | 4,380 | Median: 5.8 cm3,919 fish measuredLargest measured minnow: 10.8 cm | — |
| Stone loachBarbatula barbatula | 22 | 2023 | 975 | Median: 8.6 cm975 fish measuredLargest measured stone loach: 12.1 cm | — |
| 3-spined sticklebackGasterosteus aculeatus | 19 | 2023 | 468 | Median: 3.4 cm468 fish measuredLargest measured 3-spined stickleback: 8.1 cm | — |
| Common carpCyprinus carpio | 19 | 2013 | 113 | Median: 43.1 cm113 fish measuredLargest measured common carp: 67.5 cm | — |
| BullheadCottus gobio | 18 | 2023 | 1,114 | Median: 5.4 cm1,093 fish measuredLargest measured bullhead: 10.3 cm | — |
| Common breamAbramis brama | 17 | 2014 | 364 | Median: 32.8 cm364 fish measuredLargest measured common bream: 59.1 cm | — |
| TenchTinca tinca | 15 | 2011 | 52 | Median: 36.7 cm52 fish measuredLargest measured tench: 47.9 cm | — |
| RuddScardinius erythrophthalmus | 13 | 2014 | 54 | Median: 14.8 cm54 fish measuredLargest measured rudd: 21.7 cm | — |
| Brown / sea troutSalmo trutta | 11 | 2023 | 46 | Median: 23.3 cm46 fish measuredLargest measured brown / sea trout: 57.1 cm | — |
| RuffeGymnocephalus cernuus | 10 | 2011 | 172 | Median: 11.5 cm172 fish measuredLargest measured ruffe: 16.2 cm | — |
| Crucian carpCarassius carassius | 6 | 1999 | 17 | Median: 18.3 cm17 fish measuredLargest measured crucian carp: 29.5 cm | — |
| Golden goldfishCarassius auratus | 5 | 2002 | 7 | Median: 26.1 cm7 fish measuredLargest measured golden goldfish: 33 cm | — |
| 10-spined sticklebackPungitius pungitius | 2 | 2017 | 2 | Median: 3.4 cm2 fish measuredLargest measured 10-spined stickleback: 3.7 cm | — |
| BarbelBarbus barbus | 1 | 2005 | 1 | Recorded length: 13.7 cm1 fish measured | — |
| Brook lampreyLampetra planeri | 1 | 2023 | 4 | Median: 16 cm4 fish measuredLargest measured brook lamprey: 17.1 cm | — |
| Rainbow troutOncorhynchus mykiss | 1 | 1990 | 1 | Recorded length: 37.5 cm1 fish measured | — |
| ZanderSander lucioperca | 1 | 2002 | 1 | Recorded length: 45.5 cm1 fish measured | — |
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 Blackwater. 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 →