Chub · Leuciscus cephalus

Chub in the Main River Isle

Largest measured chub: 50.5 cm

The largest chub measured in Environment Agency surveys of the Main River Isle was 50.5 cm, recorded at Midelney on 11 July 2013.

Across 983 measured chub, the median measured length was 19.2 cm.

Surveyors recorded weights for 507 chub. The median was 5.3 oz (0.15 kg) and the largest recorded weight was 3 lb 8.1 oz (1.59 kg).

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

See chub records across England →

Most recent observation23 June 2022Midelney · 3 fish

Largest measured chub: 50.5 cm
Median length: 19.2 cm
Fish measured: 983
Survey locations: 11

Individual EA measurements

Largest measured chub

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
50.5 cm	11 Jul 2013	Midelney	137155
47 cm	19 May 1992	Earnshill House	80047
46.8 cm	21 May 2008	Isle Brewers	111454
46.5 cm	26 May 2004	Ashford Farm (Te)	79978
46.5 cm	12 May 2003	Ilford Bridges (Te)	75935
46.3 cm	26 May 2004	Ashford Farm (Te)	79978
46.1 cm	16 May 2003	Ashford Farm (Te)	75960
45.8 cm	22 Jun 2005	Ilford Bridges (Te)	84860
45.7 cm	26 May 2004	Ashford Farm (Te)	79978
45.7 cm	16 May 2003	Ashford Farm (Te)	75960

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where chub were found

Each point marks a survey location with at least one chub 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 chub
Midelney	11 Sept 2007	23 Jun 2022	6
Cocks Bridge (Te)	18 Jun 1992	16 Jun 2022	15
Ashford Farm (Te)	29 May 1992	14 Jun 2022	14
Ilford Bridges (Te)	11 Jun 1992	23 Jun 2016	11
Hambridge	8 Jun 1992	24 May 2011	3
Hort Bridge	7 Jul 2010	7 Jul 2010	1
Isle Brewers	9 Jun 1992	21 May 2008	3
Donyatt	25 Jun 1992	7 Jul 1997	2
Winterhay Lane	19 Jun 1992	4 Jul 1997	2
Earnshill House	19 May 1992	19 May 1992	1
Downstream Westport Canal	14 May 1992	14 May 1992	1

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

1992–2022

Survey records by year

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

992

093

094

095

096

797

098

099

000

001

202

303

304

305

306

407

508

109

410

311

112

313

114

015

316

117

018

019

020

021

322

Fish measured by surveyors

Measured length distribution

See how the 983 measured fish were spread across different length ranges.

Smallest: 2.2 cm
Lower quarter: 13.5 cm
Median: 19.2 cm
Upper quarter: 27.2 cm
Largest: 50.5 cm

0–99 mm

133

100–199 mm

385

200–299 mm

278

300–399 mm

132

400–499 mm

500–599 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 507 chub. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0 oz (0.001 kg)
Lower quarter: 1.4 oz (0.041 kg)
Median: 5.3 oz (0.15 kg)
Upper quarter: 1 lb 2.2 oz (0.5165 kg)
Heaviest: 3 lb 8.1 oz (1.59 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Main River Isle

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

European eel Stone loach Minnow Dace Roach Bullhead

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 →