RiverFish

Chub · Leuciscus cephalus

Chub in the River Monkey island

Largest measured chub: 25.3 cm

The largest chub measured in Environment Agency surveys of the River Monkey island was 25.3 cm, recorded at Monkey Island Downstream Fry on 22 August 2017.

Across 925 measured chub, the median measured length was 2.7 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 Monkey island.

See chub records across England →

Most recent observation4 September 2025Monkey Island Upstream Fry · 31 fish
Largest measured chub
25.3 cm
Median length
2.7 cm
Fish measured
925
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
25.3 cm22 Aug 2017Monkey Island Downstream Fry151488
22.5 cm22 Aug 2017Monkey Island Downstream Fry151488
20.8 cm23 Aug 2016Monkey Island Downstream Fry149227
20.6 cm20 Aug 2018Monkey Island Downstream Fry153439
19.6 cm24 Aug 2011Monkey Island Upstream Fry130078
18.8 cm21 Aug 2003Monkey Island Upstream Fry117041
17.8 cm20 Aug 2018Monkey Island Upstream Fry153438
16.6 cm21 Aug 2003Monkey Island Upstream Fry117041
15.9 cm21 Aug 2003Monkey Island Downstream Fry117043
15.9 cm21 Aug 2003Monkey Island Upstream Fry117041

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
Monkey Island Upstream Fry21 Aug 20034 Sept 202514
Monkey Island Downstream Fry21 Aug 20034 Sept 202513

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 925 measured fish were spread across different length ranges.

Smallest
0.8 cm
Lower quarter
2.1 cm
Median
2.7 cm
Upper quarter
3.8 cm
Largest
25.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Monkey island

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

Perch Roach Dace Gudgeon Minnow Bleak

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 →