RiverFish

Bullhead · Cottus gobio

Bullhead in the River Main Congresbury Yeo

Largest measured bullhead: 9.7 cm

The largest bullhead measured in Environment Agency surveys of the River Main Congresbury Yeo was 9.7 cm, recorded at Emley Lane on 28 September 1994.

Across 331 measured bullhead, the median measured length was 5.6 cm.

Surveyors recorded weights for 45 bullhead. The median was 0.1 oz (0.002 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 Main Congresbury Yeo.

See bullhead records across England →

Most recent observation23 July 2013Beam Bridge (Se-05) · 69 fish
Largest measured bullhead
9.7 cm
Median length
5.6 cm
Fish measured
331
Survey locations
6

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
9.7 cm28 Sept 1994Emley Lane79700
9.3 cm23 Jul 2013Beam Bridge (Se-05)137351
9.3 cm23 Jul 2013Emley Lane d/s137350
9.1 cm23 Jul 2013Emley Lane d/s137350
8.9 cm17 Aug 1994Perry Bridge79701
8.8 cm10 Aug 2012Iwood132855
8.7 cm23 Jul 2013Emley Lane d/s137350
8.6 cm23 Jul 2013Emley Lane d/s137350
8.5 cm23 Jul 2013Beam Bridge (Se-05)137351
8.5 cm23 Jul 2013Beam Bridge (Se-05)137351

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
Emley Lane d/s23 Jul 201323 Jul 20131
Beam Bridge (Se-05)27 Jul 199423 Jul 20135
Iwood12 Oct 200610 Aug 20122
Perry Bridge17 Aug 19946 Oct 19992
Iwood Bridge27 Aug 199927 Aug 19991
Emley Lane28 Sept 199428 Sept 19941

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

1994–2013

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 331 measured fish were spread across different length ranges.

Smallest
2.1 cm
Lower quarter
3.9 cm
Median
5.6 cm
Upper quarter
6.8 cm
Largest
9.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 45 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 oz (0.001 kg)
Median
0.1 oz (0.002 kg)
Upper quarter
0.1 oz (0.004 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 Main Congresbury Yeo

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

European eel Stone loach Brown / sea trout Roach Gudgeon Pike

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 →