RiverFish

Chub · Leuciscus cephalus

Chub in the River Onny

Largest measured chub: 41.1 cm

The largest chub measured in Environment Agency surveys of the River Onny was 41.1 cm, recorded at Craven Arms (DS Halford Weir) on 14 August 2023.

Across 47 measured chub, the median measured length was 24.1 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 Onny.

See chub records across England →

Most recent observation10 September 2025Craven Arms (DS Halford Weir) · 1 fish
Largest measured chub
41.1 cm
Median length
24.1 cm
Fish measured
47
Survey locations
4

Individual EA measurements

Largest measured chub

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

LengthSurvey dateSurvey locationSurvey ID
41.1 cm14 Aug 2023Craven Arms (DS Halford Weir)162920
40.8 cm17 Sept 2024Craven Arms (DS Halford Weir)168174
40.5 cm14 Aug 2023Craven Arms (DS Halford Weir)162920
40.1 cm17 Sept 2024Craven Arms (DS Halford Weir)168174
39.5 cm14 Aug 2023Craven Arms (DS Halford Weir)162920
38.6 cm17 Sept 2024Craven Arms (DS Halford Weir)168174
38.4 cm11 Aug 2021Upstream Plowden Mill160102
38.2 cm14 Aug 2023Craven Arms (DS Halford Weir)162920
34.2 cm17 Sept 2024Craven Arms (DS Halford Weir)168174
33.7 cm17 Sept 2024Craven Arms (DS Halford Weir)168174

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 surveyedFirst recordedLast recordedVisits finding chub
Craven Arms (DS Halford Weir)13 Sept 202210 Sept 20254
Upstream Plowden Mill11 Aug 202120 Aug 20255
Bow House19 May 199323 Jun 20002
Bromfield25 Sept 199125 Sept 19911

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

1991–2025

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 47 measured fish were spread across different length ranges.

Smallest
2.3 cm
Lower quarter
9.8 cm
Median
24.1 cm
Upper quarter
31.4 cm
Largest
41.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Onny

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

Bullhead Stone loach Minnow Brown / sea trout Atlantic salmon European eel

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 →