RiverFish

Bullhead · Cottus gobio

Bullhead in the River Stort

Largest measured bullhead: 10.3 cm

The largest bullhead measured in Environment Agency surveys of the River Stort was 10.3 cm, recorded at Grange Paddocks on 29 August 2008.

Across 270 measured bullhead, the median measured length was 6.1 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the River Stort.

See bullhead records across England →

Most recent observation19 August 2025Grange Paddocks
Largest measured bullhead
10.3 cm
Median length
6.1 cm
Fish measured
270
Survey locations
7

Individual EA measurements

Largest measured bullhead

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
10.3 cm29 Aug 2008Grange Paddocks113588
10.1 cm29 Aug 2008Grange Paddocks113588
10.1 cm29 Sept 2004Tednambury Mill (Little Hallingbury Mill)82735
9.8 cm29 Aug 2008Grange Paddocks113588
9.4 cm29 Aug 2008Grange Paddocks113588
9.3 cm29 Aug 2008Grange Paddocks113588
9.2 cm29 Aug 2008Grange Paddocks113588
9 cm29 Aug 2008Grange Paddocks113588
8.9 cm29 Aug 2008Grange Paddocks113588
8.9 cm29 Aug 2008Grange Paddocks113588

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where bullhead were found

Each point marks a survey location with at least one bullhead record.

Choose a point on the map to see what was recorded there.

Map points are approximate and don’t show fishing access. Check local permissions before visiting.

Place surveyedFirst recordedLast recordedVisits finding bullhead
Grange Paddocks7 Oct 200319 Aug 202510
Briggens Park15 Oct 200310 Sept 20197
Tednambury Mill (Little Hallingbury Mill)8 Oct 200320 Aug 201510
Eastwick Loop30 Apr 200930 Apr 20091
Sawbridgeworth Loop29 Apr 200929 Apr 20091
Pishiobury Meander29 Apr 200929 Apr 20091
Roydon Loop27 Apr 200927 Apr 20091

Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.

2003–2025

Survey records by year

Each bar shows how many survey visits recorded bullhead that year.

Fish measured by surveyors

Measured length distribution

See how the 270 measured fish were spread across different length ranges.

Smallest
2 cm
Lower quarter
3.9 cm
Median
6.1 cm
Upper quarter
7.1 cm
Largest
10.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Stort

Compare other species with enough survey and measurement data for a detailed page.

Dace Chub Pike Roach Minnow Perch

Before you fish

Good to know

These are past survey records, so the fish present today may be different. Map points are approximate—check local access, permissions and fishing rules before visiting.

Learn how RiverFish uses the data →