RiverFish

Bullhead · Cottus gobio

Bullhead in the River Sapiston (Black Bourn)

Largest measured bullhead: 8.9 cm

The largest bullhead measured in Environment Agency surveys of the River Sapiston (Black Bourn) was 8.9 cm, recorded at Bullbridge on 21 August 2024.

Across 96 measured bullhead, the median measured length was 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 River Sapiston (Black Bourn).

See bullhead records across England →

Most recent observation28 August 2024Euston · 1 fish
Largest measured bullhead
8.9 cm
Median length
6 cm
Fish measured
96
Survey locations
10

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
8.9 cm21 Aug 2024Bullbridge166456
8.4 cm3 Sept 2012Bailey Pool Bridge133174
8.3 cm24 Oct 2000Micklemere30791
8.3 cm24 Oct 2000Micklemere30791
8.3 cm24 Oct 1995US Burnthall Plantation30071
8.3 cm16 Oct 1995Bardwell Mill30069
8.3 cm16 Oct 1995Bardwell Mill30069
8.3 cm12 Jul 1988Ixworth Mill30030
8.1 cm5 Nov 2018Bailey Pool Bridge154244
7.8 cm14 Aug 2012Euston132845

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
Euston22 Apr 199228 Aug 20246
Bailey Pool Bridge26 Apr 200522 Aug 20245
Bullbridge15 Aug 201221 Aug 20243
Sapiston Bridge25 Aug 20097 Sept 20122
Micklemere18 Oct 19954 Sept 20124
Ixworth18 Aug 200918 Aug 20091
Burnthall Plantation26 Oct 199526 Oct 19951
US Burnthall Plantation24 Oct 199524 Oct 19951
Ixworth Mill12 Jul 198817 Oct 19952
Bardwell Mill12 Jul 198816 Oct 19952

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

1988–2024

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 96 measured fish were spread across different length ranges.

Smallest
2.3 cm
Lower quarter
4.8 cm
Median
6.1 cm
Upper quarter
6.6 cm
Largest
8.9 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Sapiston (Black Bourn)

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

Dace Roach Gudgeon Pike Chub European eel

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 →