RiverFish

Bullhead · Cottus gobio

Bullhead in the River Western Rother Tributaries

Largest measured bullhead: 9.4 cm

The largest bullhead measured in Environment Agency surveys of the River Western Rother Tributaries was 9.4 cm, recorded at Sutton Stream conf on 12 July 2013.

Across 261 measured bullhead, the median measured length was 5.5 cm.

Surveyors recorded weights for 147 bullhead. The median was 0.1 oz (0.003 kg) and the largest recorded weight was 0.4 oz (0.012 kg).

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the River Western Rother Tributaries.

See bullhead records across England →

Most recent observation14 July 2026Haslingbourne Brook, Strood Farm · 16 fish
Largest measured bullhead
9.4 cm
Median length
5.5 cm
Fish measured
261
Survey locations
15

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
9.4 cm12 Jul 2013Sutton Stream conf137169
9.3 cm5 Jun 2008Tilmore Brook111646
9.2 cm20 Sept 2001Ashford Stream22623
9 cm22 Aug 2014Sutton Stream conf142838
9 cm8 Jul 2008Selham Stream112070
8.5 cm10 Jul 2008Sutton Stream112068
8.5 cm20 Sept 2001Ashford Stream22623
8.5 cm20 Sept 2001Ashford Stream22623
8.3 cm20 Sept 2001Ashford Stream22623
8.2 cm12 Jul 2013Sutton Stream conf137169

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
Haslingbourne Brook, Strood Farm27 Jul 201214 Jul 20262
Haslingbourne Brook12 Oct 20011 Jul 20215
Sutton Stream conf12 Jul 201322 Aug 20142
Burton millstream conf12 Jul 201322 Aug 20142
Sutton Stream11 Oct 200110 Jul 20082
Selham Stream11 Oct 20018 Jul 20082
Tilmore Brook28 Sept 20015 Jun 20082
Barnetts Brook11 Oct 200111 Oct 20011
Duncton Mill10 Oct 200110 Oct 20011
Elsted Stream5 Oct 20015 Oct 20011
Batts Brook3 Oct 20013 Oct 20011
Burton Mill28 Sept 200128 Sept 20011
Ashford Stream20 Sept 200120 Sept 20011
Oakshott Stream14 Sept 200114 Sept 20011
Greatham Stream14 Sept 200114 Sept 20011

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

2001–2026

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 261 measured fish were spread across different length ranges.

Smallest
2 cm
Lower quarter
4.5 cm
Median
5.5 cm
Upper quarter
6.7 cm
Largest
9.4 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 147 bullhead. This is a subset of the measured fish and may not represent the whole population.

Lightest
0 oz (0.001 kg)
Lower quarter
0.1 oz (0.002 kg)
Median
0.1 oz (0.003 kg)
Upper quarter
0.2 oz (0.005 kg)
Heaviest
0.4 oz (0.012 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the River Western Rother Tributaries

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

Brown / sea trout European eel Stone loach Minnow Brook lamprey Perch

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 →