Alconbury Brook
18 fish species have been recorded at 4 locations along the Alconbury Brook.
- Fish species
- 18
- Places surveyed
- 4
- Survey visits
- 22
- Records span
- 1989–2015
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 |
|---|---|---|---|---|---|
| PikeEsox lucius | 4 | 2015 | 327 | Median: 17.8 cm327 fish measuredLargest measured pike: 82.3 cm | — |
| European eelAnguilla anguilla | 4 | 2015 | 190 | Median: 34.3 cm50 fish measuredLargest measured european eel: 50.8 cm | Median: 2.6 oz (0.075 kg)47 fish weighedLargest measured: 13.4 oz (0.38 kg) |
| RoachRutilus rutilus | 4 | 2015 | 1,268 | Median: 9.3 cm1,217 fish measuredLargest measured roach: 26.3 cm | — |
| PerchPerca fluviatilis | 4 | 2015 | 277 | Median: 7.1 cm277 fish measuredLargest measured perch: 35.5 cm | — |
| ChubLeuciscus cephalus | 4 | 2006 | 145 | Median: 34.8 cm145 fish measuredLargest measured chub: 48.3 cm | — |
| DaceLeuciscus leuciscus | 4 | 2015 | 247 | Median: 10.3 cm247 fish measuredLargest measured dace: 22.8 cm | — |
| GudgeonGobio gobio | 3 | 2015 | 232 | Median: 7.6 cm232 fish measuredLargest measured gudgeon: 11.3 cm | — |
| Stone loachBarbatula barbatula | 2 | 2015 | 40 | Median: 6.4 cm40 fish measuredLargest measured stone loach: 14.6 cm | — |
| BullheadCottus gobio | 2 | 2015 | 12 | Median: 7.2 cm12 fish measuredLargest measured bullhead: 8.3 cm | — |
| Common breamAbramis brama | 2 | 2006 | 10 | Median: 5.5 cm10 fish measuredLargest measured common bream: 6.8 cm | — |
| 3-spined sticklebackGasterosteus aculeatus | 2 | 2015 | 17 | Median: 3.1 cm17 fish measuredLargest measured 3-spined stickleback: 5.3 cm | — |
| TenchTinca tinca | 2 | 2011 | 4 | Median: 11.7 cm4 fish measuredLargest measured tench: 15.7 cm | — |
| BleakAlburnus alburnus | 2 | 1995 | 37 | Median: 7.8 cm37 fish measuredLargest measured bleak: 12.3 cm | — |
| Spined loachCobitis taenia | 2 | 2011 | 4 | Median: 6.7 cm4 fish measuredLargest measured spined loach: 7.1 cm | — |
| 10-spined sticklebackPungitius pungitius | 1 | 2015 | 5 | Median: 4.3 cm5 fish measuredLargest measured 10-spined stickleback: 4.8 cm | — |
| RuffeGymnocephalus cernuus | 1 | 2011 | 2 | Median: 6.2 cm2 fish measuredLargest measured ruffe: 7 cm | — |
| RuddScardinius erythrophthalmus | 1 | 2015 | 2 | Median: 7.7 cm2 fish measuredLargest measured rudd: 11.3 cm | — |
| Silver breamAbramis bjoerkna | 1 | 1995 | 3 | Median: 8.3 cm3 fish measuredLargest measured silver bream: 8.8 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 Alconbury Brook. 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 →