RiverFish

Bullhead · Cottus gobio

Bullhead in the Main River Waldon

Largest measured bullhead: 8 cm

The largest bullhead measured in Environment Agency surveys of the Main River Waldon was 8 cm, recorded at Sutcombe Mill (Te) on 16 July 2018.

Across 293 measured bullhead, the median measured length was 3.6 cm.

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

See bullhead records across England →

Most recent observation3 September 2024Instaple (Sp) · 10 fish
Largest measured bullhead
8 cm
Median length
3.6 cm
Fish measured
293
Survey locations
6

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
8 cm16 Jul 2018Sutcombe Mill (Te)152910
7.9 cm11 Jul 2016Sutcombe Mill (Te)148440
7.8 cm1 Aug 2017Instaple (Sp)151147
7.7 cm3 Jul 2017Sutcombe Mill (Te)150814
7.6 cm11 Jul 2016Sutcombe Mill (Te)148440
7.5 cm10 Jul 2017Thornbury Bridge (Sp)150828
7.2 cm10 Jul 2017Thornbury Bridge (Sp)150828
7.1 cm1 Aug 2017Instaple (Sp)151147
7 cm11 Jul 2016Sutcombe Mill (Te)148440
6.9 cm16 Jul 2018Sutcombe Mill (Te)152910

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
Instaple (Sp)11 Aug 19973 Sept 20245
Thornbury Bridge (Sp)18 Aug 199724 Jul 20246
Sutcombe Mill (Te)17 Aug 199824 Jul 202417
Honnacott (Sp)11 Aug 199718 Jul 20246
Upstream Waldon Bridge (Sp)*12 Aug 19971 Oct 20023
Henscott Bridge (Sp)*27 Aug 199827 Sept 20022

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

1997–2024

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 293 measured fish were spread across different length ranges.

Smallest
2 cm
Lower quarter
2.9 cm
Median
3.6 cm
Upper quarter
5.4 cm
Largest
8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Main River Waldon

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

Brown / sea trout Atlantic salmon Minnow Stone loach European eel Gudgeon

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 →