RiverFish

Bullhead · Cottus gobio

Bullhead in the Main Semington Brook

Largest measured bullhead: 8 cm

The largest bullhead measured in Environment Agency surveys of the Main Semington Brook was 8 cm, recorded at Whaddon Grove Farm on 2 August 2012.

Across 9 measured bullhead, the median measured length was 7.3 cm.

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

See bullhead records across England →

Most recent observation2 August 2012Whaddon Grove Farm · 8 fish
Largest measured bullhead
8 cm
Median length
7.3 cm
Fish measured
9
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
8 cm2 Aug 2012Whaddon Grove Farm132597
7.8 cm2 Aug 2012Whaddon Grove Farm132597
7.6 cm2 Aug 2012Whaddon Grove Farm132597
7.5 cm2 Aug 2012Whaddon Grove Farm132597
7.3 cm2 Aug 2012Whaddon Grove Farm132597
6.5 cm2 Aug 2012Whaddon Grove Farm132597
6.1 cm2 Aug 2012Whaddon Grove Farm132597
4.1 cm1 Aug 2012Great Cheverell Mill132595
3 cm2 Aug 2012Whaddon Grove Farm132597

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
Whaddon Grove Farm2 Aug 20122 Aug 20121
Great Cheverell Mill1 Aug 20121 Aug 20121
Oxen Leaze Farm (Se-01)12 Sept 200112 Sept 20011
Hurst Farm14 May 19976 Sept 20012
West Lavington (Se-01)19 Jul 200119 Jul 20011

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

1997–2012

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 9 measured fish were spread across different length ranges.

Smallest
3 cm
Lower quarter
6.1 cm
Median
7.3 cm
Upper quarter
7.6 cm
Largest
8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Main Semington Brook

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

Brown / sea trout Roach Gudgeon Stone loach Dace Minnow

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 →