Bullhead · Cottus gobio

Bullhead in the River Eden

Largest measured bullhead: 10.2 cm

The largest bullhead measured in Environment Agency surveys of the River Eden was 10.2 cm, recorded at Delaware Farm on 25 April 2002.

Across 491 measured bullhead, the median measured length was 6.2 cm.

Surveyors recorded weights for 7 bullhead. The median was 0.1 oz (0.004 kg) and the largest recorded weight was 0.4 oz (0.01 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 Eden.

See bullhead records across England →

Most recent observation10 June 2025Haxted Mill · 5 fish

Largest measured bullhead: 10.2 cm
Median length: 6.2 cm
Fish measured: 491
Survey locations: 7

Individual EA measurements

Largest measured bullhead

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

Length	Survey date	Survey location	Survey ID
10.2 cm	25 Apr 2002	Delaware Farm	66421
9.6 cm	24 May 2016	d/s Lingfield Park Race Course	148090
9.5 cm	1 Oct 2002	Delaware Farm	72863
9.5 cm	8 Jun 2001	Haxted Mill	22143
9.4 cm	25 May 2016	Long Acres	148129
9.4 cm	20 Jun 2013	Delaware Farm	136565
9.4 cm	12 Jun 2013	Haxted Mill	136380
9.3 cm	12 Jun 2013	Haxted Mill	136380
9.3 cm	12 Jun 2013	Haxted Mill	136380
9 cm	27 May 2016	Cernes Farm	148108

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 surveyed	First recorded	Last recorded	Visits finding bullhead
Haxted Mill	8 Jun 2001	10 Jun 2025	11
Cernes Farm	7 Jul 2004	28 May 2025	10
Delaware Farm	25 Apr 2002	19 Jul 2016	8
Long Acres	25 May 2016	25 May 2016	1
d/s Lingfield Park Race Course	24 May 2016	24 May 2016	1
u/s Vexour Bridge	19 Jun 2013	19 Jun 2013	1
u/s Bough Beech Intake	20 Dec 2001	20 Dec 2001	1

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

2001–2025

Survey records by year

Each bar shows how many survey visits recorded bullhead that year.

201

202

003

204

205

306

307

308

209

110

011

012

413

014

015

516

017

018

219

020

021

022

023

024

225

Fish measured by surveyors

Measured length distribution

See how the 491 measured fish were spread across different length ranges.

Smallest: 2.4 cm
Lower quarter: 5.2 cm
Median: 6.2 cm
Upper quarter: 7.2 cm
Largest: 10.2 cm

0–99 mm

490

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 7 bullhead. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.1 oz (0.002 kg)
Lower quarter: 0.1 oz (0.003 kg)
Median: 0.1 oz (0.004 kg)
Upper quarter: 0.2 oz (0.007 kg)
Heaviest: 0.4 oz (0.01 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 Eden

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

Roach Chub Gudgeon Minnow Stone loach 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 →