Bullhead · Cottus gobio

Bullhead in the Main Tiddy Brook

Largest measured bullhead: 8.5 cm

The largest bullhead measured in Environment Agency surveys of the Main Tiddy Brook was 8.5 cm, recorded at Heskyn Mill on 12 September 2024.

Across 148 measured bullhead, the median measured length was 5.6 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Main Tiddy Brook.

See bullhead records across England →

Most recent observation12 September 2024Heskyn Mill · 10 fish

Largest measured bullhead: 8.5 cm
Median length: 5.6 cm
Fish measured: 148
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
8.5 cm	12 Sept 2024	Heskyn Mill	167191
8 cm	10 Sept 2012	Heskyn Mill	133467
7.9 cm	10 Sept 2012	Heskyn Mill	133467
7.6 cm	7 Sept 2018	Tilland	153727
7.6 cm	14 Aug 2012	Hepwell Bridge	132829
7.6 cm	7 Aug 2012	Tilland	132684
7.5 cm	7 Sept 2018	Tilland	153727
7.4 cm	7 Sept 2018	Tilland	153727
7.4 cm	7 Sept 2018	Tilland	153727
7.3 cm	13 Aug 2009	Tilland	118770

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
Heskyn Mill	3 Sept 1990	12 Sept 2024	8
Hepwell Bridge	20 Sept 1990	19 Sept 2018	7
Tilland	12 Sept 1990	7 Sept 2018	8
Cutkive Wood	21 Sept 1990	30 Aug 2018	7
Treweatha	26 Sept 1990	22 Aug 2018	7
Cutmere	20 Jul 1993	30 Jun 1997	2
Coombe	25 Sept 1990	25 Sept 1990	1

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

1990–2024

Survey records by year

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

690

091

092

693

094

095

096

697

098

099

500

001

002

003

004

005

506

007

008

109

010

011

512

013

014

015

016

017

518

019

020

021

022

023

124

Fish measured by surveyors

Measured length distribution

See how the 148 measured fish were spread across different length ranges.

Smallest: 2 cm
Lower quarter: 4.6 cm
Median: 5.6 cm
Upper quarter: 6.4 cm
Largest: 8.5 cm

0–99 mm

148

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Main Tiddy Brook

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

Brown / sea trout Atlantic salmon European eel Brook lamprey

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 →