Bullhead · Cottus gobio

Bullhead in the River Ter (Main Reaches)

Largest measured bullhead: 10 cm

The largest bullhead measured in Environment Agency surveys of the River Ter (Main Reaches) was 10 cm, recorded at Hatfield Peveral STW on 11 June 2001.

Across 184 measured bullhead, the median measured length was 5.8 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 Ter (Main Reaches).

See bullhead records across England →

Most recent observation16 May 2025Nounsley Ford · 37 fish

Largest measured bullhead: 10 cm
Median length: 5.8 cm
Fish measured: 184
Survey locations: 5

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 cm	11 Jun 2001	Hatfield Peveral STW	15595
9.9 cm	30 Apr 1986	Nounsley Ford	14458
9.7 cm	6 Jun 2001	Crabbs Hill	15594
9.2 cm	12 May 2025	Bumford Bridge	177216
9.1 cm	12 May 1986	Hatfield Peveral STW	14460
9.1 cm	30 Apr 1986	Nounsley Ford	14458
9 cm	6 Apr 1989	Hatfield Peveral STW	14465
8.9 cm	11 Jun 2001	Hatfield Peveral STW	15595
8.9 cm	23 Apr 1992	Bumford Bridge	14467
8.5 cm	6 May 1986	A12 Bridge (River Ter)	14461

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
Nounsley Ford	30 Apr 1986	16 May 2025	6
Bumford Bridge	29 Apr 1986	12 May 2025	6
A12 Bridge (River Ter)	6 May 1986	12 Jun 2001	2
Hatfield Peveral STW	12 May 1986	11 Jun 2001	4
Crabbs Hill	6 Jun 2001	6 Jun 2001	1

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

1986–2025

Survey records by year

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

486

087

088

189

090

091

192

093

094

095

096

097

198

099

000

501

002

003

004

005

006

207

008

009

010

011

012

213

014

015

016

017

018

119

020

021

022

023

024

225

Fish measured by surveyors

Measured length distribution

See how the 184 measured fish were spread across different length ranges.

Smallest: 3.8 cm
Lower quarter: 5.2 cm
Median: 5.9 cm
Upper quarter: 6.7 cm
Largest: 10 cm

0–99 mm

183

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ter (Main Reaches)

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

European eel Chub Roach Dace Pike Brown / sea trout

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 →