RiverFish

Chub · Leuciscus cephalus

Chub in the Stort Navigation

Largest measured chub: 52.5 cm

The largest chub measured in Environment Agency surveys of the Stort Navigation was 52.5 cm, recorded at u/s Hunsdon Mill Lock on 9 September 2025.

Across 32 measured chub, the median measured length was 13.2 cm.

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

See chub records across England →

Most recent observation9 September 2025u/s Hunsdon Mill Lock · 15 fish
Largest measured chub
52.5 cm
Median length
13.2 cm
Fish measured
32
Survey locations
3

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
52.5 cm9 Sept 2025u/s Hunsdon Mill Lock178395
47.8 cm9 Sept 2025u/s Hunsdon Mill Lock178395
47.3 cm19 Apr 2011Downstream Sheering Mill Lock126121
46.2 cm19 Apr 2011Downstream Sheering Mill Lock126121
45.5 cm9 Sept 2025u/s Hunsdon Mill Lock178395
40.5 cm19 Apr 2011Downstream Sheering Mill Lock126121
40.1 cm19 Apr 2011Downstream Sheering Mill Lock126121
25.1 cm19 Apr 2011Downstream Sheering Mill Lock126121
24.4 cm19 Apr 2011Downstream Sheering Mill Lock126121
16.5 cm21 Aug 2025Sheering Mill Lock CPUE178037

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
u/s Hunsdon Mill Lock9 Sept 20259 Sept 20251
Sheering Mill Lock CPUE21 Aug 202521 Aug 20251
Downstream Sheering Mill Lock19 Apr 201119 Apr 20111

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

2011–2025

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 32 measured fish were spread across different length ranges.

Smallest
3.5 cm
Lower quarter
6.1 cm
Median
13.2 cm
Upper quarter
24.6 cm
Largest
52.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Stort Navigation

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

Perch Pike Roach Bleak Common bream Gudgeon

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 →