RiverFish

Bitterling · Rhodeus sericeus

Bitterling in the Relief Channel

Largest measured bitterling: 8.7 cm

The largest bitterling measured in Environment Agency surveys of the Relief Channel was 8.7 cm, recorded at Denver Sluice on 8 August 2023.

Across 25 measured bitterling, the median measured length was 6.3 cm.

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

See bitterling records across England →

Most recent observation8 August 2023Denver Sluice · 13 fish
Largest measured bitterling
8.7 cm
Median length
6.3 cm
Fish measured
25
Survey locations
3

Individual EA measurements

Largest measured bitterling

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

LengthSurvey dateSurvey locationSurvey ID
8.7 cm8 Aug 2023Denver Sluice162898
7.6 cm8 Aug 2023Denver Sluice162898
7 cm8 Aug 2023Denver Sluice162898
6.9 cm8 Aug 2023Denver Sluice162898
6.8 cm8 Aug 2023Denver Sluice162898
6.7 cm8 Aug 2023Denver Sluice162898
6.7 cm8 Aug 2023Denver Sluice162898
6.5 cm8 Aug 2023Denver Sluice162898
6.5 cm8 Aug 2023Denver Sluice162898
6.5 cm8 Aug 2023Denver Sluice162898

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where bitterling were found

Each point marks a survey location with at least one bitterling 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 bitterling
Denver Sluice8 Aug 20238 Aug 20231
Wiggenhall Bridge14 Jul 201414 Jul 20141
Holme Farm Magdalen15 Aug 200515 Aug 20051

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

2005–2023

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 25 measured fish were spread across different length ranges.

Smallest
4.9 cm
Lower quarter
5.2 cm
Median
6.3 cm
Upper quarter
6.7 cm
Largest
8.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Relief Channel

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

Perch Roach Ruffe Zander Pike 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 →