RiverFish

Bullhead · Cottus gobio

Bullhead in the River Alre

Largest measured bullhead: 10.4 cm

The largest bullhead measured in Environment Agency surveys of the River Alre was 10.4 cm, recorded at Arle 1: Arle Mill on 11 August 2025.

Across 109 measured bullhead, the median measured length was 5.3 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 Alre.

See bullhead records across England →

Most recent observation11 August 2025Arle 1: Arle Mill · 147 fish
Largest measured bullhead
10.4 cm
Median length
5.3 cm
Fish measured
109
Survey locations
5

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
10.4 cm11 Aug 2025Arle 1: Arle Mill177878
9.5 cm11 Aug 2025Arle 1: Arle Mill177878
8 cm11 Aug 2025Arle 1: Arle Mill177878
7.8 cm11 Aug 2025Arle 1: Arle Mill177878
7.6 cm11 Aug 2025Arle 1: Arle Mill177878
7.5 cm11 Aug 2025Arle 1: Arle Mill177878
7.5 cm11 Aug 2025Arle 1: Arle Mill177878
7.4 cm11 Aug 2025Arle 1: Arle Mill177878
7 cm11 Aug 2025Arle 1: Arle Mill177878
7 cm11 Aug 2025Arle 1: Arle Mill177878

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
Arle 1: Arle Mill23 Sept 200911 Aug 20259
Arle 4: d/s Eel House23 Sept 200929 Sept 20152
Arle 3: Bishop's Sutton21 Sept 200929 Sept 20152
Arle 2: d/s Drove Lane3 Sept 200229 Sept 20153
Franklins trout farm6 May 20036 May 20031

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

2002–2025

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 109 measured fish were spread across different length ranges.

Smallest
2.4 cm
Lower quarter
4.4 cm
Median
5.3 cm
Upper quarter
6.2 cm
Largest
10.4 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Alre

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

Brown / sea trout European eel Pike Brook lamprey Grayling

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 →