RiverFish

Bullhead · Cottus gobio

Bullhead in the River Main Tavy

Largest measured bullhead: 9.1 cm

The largest bullhead measured in Environment Agency surveys of the River Main Tavy was 9.1 cm, recorded at u/s Harford Bridge on 8 July 2013.

Across 1,167 measured bullhead, the median measured length was 5.7 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 Main Tavy.

See bullhead records across England →

Most recent observation9 September 2025Langham Wood · 25 fish
Largest measured bullhead
9.1 cm
Median length
5.7 cm
Fish measured
1,167
Survey locations
17

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
9.1 cm8 Jul 2013u/s Harford Bridge137004
9 cm25 Jul 1997Evans Weir135621
8.9 cm20 Jun 2000u/s Harford Bridge104369
8.8 cm12 Jul 2019u/s Harford Bridge155468
8.8 cm20 Jun 2000u/s Harford Bridge104369
8.8 cm20 Jun 2000u/s Harford Bridge104369
8.8 cm23 Jun 1999u/s Harford Bridge104703
8.6 cm9 Sept 2024Brook Mill167212
8.6 cm4 Jul 2024Lumburn Confluence165444
8.6 cm8 Jul 2013u/s Harford Bridge137004

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
Langham Wood8 Sept 19839 Sept 20256
Balstone13 Aug 19989 Sept 20256
Denham Woods13 Aug 199827 Aug 20255
Brook Mill19 Jul 198321 Aug 202516
Evans Weir11 Jul 198320 Aug 20259
u/s Harford Bridge2 Aug 198325 Jul 202516
Rowdens Wood8 Aug 201323 Jul 20243
Higher Harford27 Jun 202323 Jul 20242
Lumburn Confluence13 Jul 20234 Jul 20242
u/s Double Waters11 Jul 199827 Jun 20244
Sausage Factory11 Jul 199827 Jun 20244
Wharf Car Park19 Jun 202317 Jun 20242
Willminstone17 Jul 202317 Jul 20231
Downstream Colly Brook Confluence25 Sept 201425 Sept 20141
Iron Bridge5 Jul 20051 Aug 20062
u/s Rowdens Tributary15 Sept 200515 Sept 20051
u/s Denham Bridge13 Aug 199822 Jul 20022

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

1983–2025

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 1,167 measured fish were spread across different length ranges.

Smallest
2 cm
Lower quarter
3.8 cm
Median
5.7 cm
Upper quarter
6.7 cm
Largest
9.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Tavy

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

Brown / sea trout European eel Atlantic salmon Stone loach 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 →