RiverFish

Bullhead · Cottus gobio

Bullhead in the River Loddon

Largest measured bullhead: 7.7 cm

The largest bullhead measured in Environment Agency surveys of the River Loddon was 7.7 cm, recorded at Lodge Farm on 17 October 2002.

Across 45 measured bullhead, the median measured length was 6.4 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 Loddon.

See bullhead records across England →

Most recent observation28 October 2025Lodge Farm
Largest measured bullhead
7.7 cm
Median length
6.4 cm
Fish measured
45
Survey locations
12

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
7.7 cm17 Oct 2002Lodge Farm65400
7.7 cm17 Oct 2002Lodge Farm65400
7.5 cm17 Oct 2002Lodge Farm65400
7.4 cm17 Oct 2002Lodge Farm65400
7.3 cm17 Oct 2002Lodge Farm65400
7.3 cm17 Oct 2002Lodge Farm65400
7.3 cm17 Oct 2002Lodge Farm65400
7.1 cm17 Oct 2002Lodge Farm65400
7.1 cm17 Oct 2002Lodge Farm65400
7 cm17 Oct 2002Lodge Farm65400

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
Lodge Farm11 Oct 200128 Oct 202521
Keepers Cottage25 Oct 200228 Oct 202514
Twyford RH channel Downstream25 Apr 20191 May 20252
Twyford LH Channel13 May 20041 May 202511
Upper Stanford End20 May 20042 Apr 20252
Stratfield Saye15 Oct 201312 Oct 20162
Upstream Bartons Mill26 Apr 201326 Apr 20162
Sheepbridge2 May 20067 Apr 20165
Lower Stanford End17 Apr 20025 Apr 201611
Lilly Mill11 Nov 200315 Oct 20133
Twyford RH Channel13 May 200414 Apr 20107
Whistley Mill15 Apr 200315 Apr 20031

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

2001–2025

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 45 measured fish were spread across different length ranges.

Smallest
3.1 cm
Lower quarter
4.6 cm
Median
6.4 cm
Upper quarter
6.9 cm
Largest
7.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Loddon

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

Chub Gudgeon Brown / sea trout Pike Roach Dace

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 →