County Brook

6 fish species have been recorded at 4 locations along the County Brook.

Records updated10 August 2026Most recent survey: 2022
Fish species
6
Places surveyed
4
Survey visits
7
Records span
2021–2022

Local EA evidence

Where fish were recorded

4 of 4 places shown

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.

FishSitesMost recentFish countedMeasured lengthMeasured weight
3-spined sticklebackGasterosteus aculeatus320224Median: 4.9 cm4 fish measuredLargest measured 3-spined stickleback: 6.3 cm—
RoachRutilus rutilus3202213Median: 6.8 cm13 fish measuredLargest measured roach: 9.2 cm—
Brown / sea troutSalmo trutta220223Median: 18.3 cm3 fish measuredLargest measured brown / sea trout: 21.8 cm—
BullheadCottus gobio2202214Median: 3.7 cm14 fish measuredLargest measured bullhead: 7.4 cm—
Stone loachBarbatula barbatula22021———
MinnowPhoxinus phoxinus120223Median: 5.6 cm3 fish measuredLargest measured minnow: 7.2 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 County 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 →