RiverFish

Bullhead · Cottus gobio

Bullhead in the River Roding

Largest measured bullhead: 22 cm

The largest bullhead measured in Environment Agency surveys of the River Roding was 22 cm, recorded at Crowther Nurseries on 2 August 2005.

Across 1,422 measured bullhead, the median measured length was 3.9 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 Roding.

See bullhead records across England →

Most recent observation23 April 2026Abridge Village Hall
Largest measured bullhead
22 cm
Median length
3.9 cm
Fish measured
1,422
Survey locations
21

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
22 cm2 Aug 2005Crowther Nurseries85312
9.4 cm30 Jul 2008Roding Valley Nature Reserve112554
9.3 cm28 Apr 1992Passingford Bridge116822
8.8 cm2 Oct 2002Mount Loops72518
8.5 cm2 Aug 2005Crowther Nurseries85312
8.4 cm3 Nov 2021Littlebury Mill160895
8.4 cm10 Sept 2021Nether Street160886
8.4 cm30 Jul 2008Roding Valley Nature Reserve112554
8.4 cm20 Sept 2002Ilford Golf Course73179
8.3 cm30 Jul 2008Roding Valley Nature Reserve112554

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
Abridge Village Hall16 Apr 201523 Apr 20262
Maynards12 Jun 202430 Sept 20252
Waples Mill12 Sept 200214 Aug 20256
Littlebury Mill3 Jul 200822 Oct 20248
Roding Valley Nature Reserve25 Sept 20028 Aug 202411
High Ongar (Ongar Bridge)2 Jul 20086 Aug 20243
Ilford Golf Course20 Sept 200223 Jul 20243
Crowther Nurseries7 Aug 20032 Jul 202412
Great Canfield brown trout investigation12 Jun 202412 Jun 20241
Gang Bridge25 Mar 199015 Oct 20214
Nether Street4 Sept 200710 Sept 20214
Luxborough Lane12 May 19928 Sept 20166
Passingford Bridge28 Apr 199231 Jul 20143
Abridge21 Apr 199210 Aug 20055
Aythorpe Roding11 Mar 199311 Aug 20044
Great Canfield14 Aug 200310 Aug 20042
Redbridge20 Aug 200320 Aug 20031
Mount Loops7 Mar 199314 Aug 20033
Loughton6 Sept 20026 Sept 20021
Little Canfield3 Mar 199022 Aug 20022
Piggotts Farm M11 section6 May 19926 May 19921

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

1990–2026

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 1,422 measured fish were spread across different length ranges.

Smallest
1.5 cm
Lower quarter
3.4 cm
Median
3.9 cm
Upper quarter
5 cm
Largest
22 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Roding

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

Roach Dace Minnow Gudgeon Pike Chub

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 →