RiverFish

Bullhead · Cottus gobio

Bullhead in the River Rye System

Largest measured bullhead: 9.8 cm

The largest bullhead measured in Environment Agency surveys of the River Rye System was 9.8 cm, recorded at Ladhill Beck DERBT47 on 26 September 2018.

Across 268 measured bullhead, the median measured length was 5.9 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 Rye System.

See bullhead records across England →

Most recent observation11 September 2024Sledhill gill beck
Largest measured bullhead
9.8 cm
Median length
5.9 cm
Fish measured
268
Survey locations
11

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
9.8 cm26 Sept 2018Ladhill Beck DERBT47153808
9.5 cm23 Aug 2012Caydale beck133120
9.4 cm23 Sept 2012Marrs beck133770
9.2 cm23 Sept 2012Marrs beck133770
9.2 cm4 Sept 2012West gill beck133495
9.1 cm24 Aug 2012Sledhill gill beck133109
8.9 cm4 Sept 2012Blakey gill beck133511
8.7 cm18 Sept 2012Wath beck133796
8.7 cm23 Aug 2012Caydale beck133120
8.5 cm4 Sept 2012Blakey gill beck133511

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
Sledhill gill beck28 Jun 200611 Sept 20243
Ladhill Beck DERBT4718 Sept 20025 Sept 202417
Walmouth beck25 Sept 199728 Aug 20133
Marrs beck26 Jun 200623 Sept 20122
Wath beck22 Jun 200618 Sept 20122
Ellerker beck22 Jun 20067 Sept 20122
West gill beck29 Jun 20064 Sept 20122
Blakey gill beck29 Jun 20064 Sept 20122
Thorodale beck at Arden Hall27 Jun 200623 Aug 20122
Caydale beck27 Jun 200623 Aug 20122
Etton gill beck26 Jun 20069 Aug 20112

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

1997–2024

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 268 measured fish were spread across different length ranges.

Smallest
2 cm
Lower quarter
5.1 cm
Median
5.9 cm
Upper quarter
6.8 cm
Largest
9.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Rye System

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

Brown / sea trout Stone loach 3-spined stickleback 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 →