RiverFish

Bullhead · Cottus gobio

Bullhead in the Warmans Project sites

Largest measured bullhead: 9.8 cm

The largest bullhead measured in Environment Agency surveys of the Warmans Project sites was 9.8 cm, recorded at Warmans - Project control 1 on 1 September 2010.

Across 312 measured bullhead, the median measured length was 6.7 cm.

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

See bullhead records across England →

Most recent observation2 September 2010Warmans - Project Impacted 2 · 35 fish
Largest measured bullhead
9.8 cm
Median length
6.7 cm
Fish measured
312
Survey locations
4

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
9.8 cm1 Sept 2010Warmans - Project control 1125347
9.5 cm1 Sept 2010Warmans - Project control 1125347
9.4 cm1 Sept 2010Warmans - Project control 1125347
9.3 cm1 Sept 2010Warmans - Project control 1125347
9.1 cm2 Sept 2010Warmans - Project Impacted 1125324
9 cm1 Sept 2010Warmans - Project control 1125347
8.9 cm1 Sept 2010Warmans - Project control 2125350
8.8 cm2 Sept 2010Warmans - Project Impacted 1125324
8.8 cm1 Sept 2010Warmans - Project control 2125350
8.8 cm1 Sept 2010Warmans - Project control 1125347

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
Warmans - Project Impacted 22 Sept 20102 Sept 20101
Warmans - Project Impacted 12 Sept 20102 Sept 20101
Warmans - Project control 21 Sept 20101 Sept 20101
Warmans - Project control 11 Sept 20101 Sept 20101

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

2010–2010

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 312 measured fish were spread across different length ranges.

Smallest
2.1 cm
Lower quarter
3.7 cm
Median
6.7 cm
Upper quarter
7.6 cm
Largest
9.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Warmans Project sites

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

Brown / sea trout

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 →