RiverFish

Chub · Leuciscus cephalus

Chub in the River Marlow

Largest measured chub: 38.3 cm

The largest chub measured in Environment Agency surveys of the River Marlow was 38.3 cm, recorded at Marlow Downstream Fry on 17 August 2010.

Across 881 measured chub, the median measured length was 3 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 Marlow.

See chub records across England →

Most recent observation4 September 2025Marlow Downstream Fry · 58 fish
Largest measured chub
38.3 cm
Median length
3 cm
Fish measured
881
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
38.3 cm17 Aug 2010Marlow Downstream Fry124336
16.7 cm4 Sept 2025Marlow Downstream Fry178522
16.6 cm4 Sept 2025Marlow Downstream Fry178522
15.9 cm22 Aug 2012Marlow Upstream Fry135308
15.5 cm22 Aug 2024Marlow Upstream Fry166469
12.6 cm22 Aug 2012Marlow Upstream Fry135308
10.5 cm22 Aug 2024Marlow Upstream Fry166469
8.8 cm17 Aug 2015Marlow Upstream Fry146039
8.5 cm18 Aug 2009Marlow Downstream Fry120416
8.4 cm18 Aug 2009Marlow Downstream Fry120416

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
Marlow Downstream Fry26 Aug 20034 Sept 202514
Marlow Upstream Fry26 Aug 200322 Aug 202416

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

2003–2025

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 881 measured fish were spread across different length ranges.

Smallest
0.9 cm
Lower quarter
2.4 cm
Median
3 cm
Upper quarter
3.6 cm
Largest
38.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Marlow

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

Minnow Gudgeon Roach Bleak Dace Perch

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 →