RiverFish

Chub · Leuciscus cephalus

Chub in the River Old Windsor

Largest measured chub: 43.3 cm

The largest chub measured in Environment Agency surveys of the River Old Windsor was 43.3 cm, recorded at Old Windsor Downstream Fry on 21 August 2018.

Across 1,910 measured chub, the median measured length was 3.5 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 Old Windsor.

See chub records across England →

Most recent observation3 September 2025Old Windsor Upstream Fry · 119 fish
Largest measured chub
43.3 cm
Median length
3.5 cm
Fish measured
1,910
Survey locations
2

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
43.3 cm21 Aug 2018Old Windsor Downstream Fry153458
19.4 cm31 Aug 2023Old Windsor Downstream Fry164251
19.3 cm21 Aug 2018Old Windsor Upstream Fry153459
16.4 cm21 Aug 2007Old Windsor Upstream Fry108618
16.4 cm21 Aug 2007Old Windsor Upstream Fry108618
15 cm21 Aug 2007Old Windsor Upstream Fry108618
14.2 cm31 Aug 2023Old Windsor Downstream Fry164251
13.8 cm31 Aug 2023Old Windsor Downstream Fry164251
12.7 cm21 Aug 2018Old Windsor Downstream Fry153458
12.5 cm21 Aug 2018Old Windsor Upstream Fry153459

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
Old Windsor Upstream Fry9 Sept 20043 Sept 202515
Old Windsor Downstream Fry9 Sept 20043 Sept 202516

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

2004–2025

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 1,910 measured fish were spread across different length ranges.

Smallest
1 cm
Lower quarter
2.8 cm
Median
3.5 cm
Upper quarter
4 cm
Largest
43.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Old Windsor

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

Dace Gudgeon Roach Minnow Bleak 3-spined stickleback

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 →