Bitterling · Rhodeus sericeus

Bitterling in the River Middle Ouse

Largest measured bitterling: 9.9 cm

The largest bitterling measured in Environment Agency surveys of the River Middle Ouse was 9.9 cm, recorded at Holywell on 26 September 2016.

Across 126 measured bitterling, the median measured length was 6.5 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 Middle Ouse.

See bitterling records across England →

Most recent observation11 October 2019Pike & Eel · 76 fish

Largest measured bitterling: 9.9 cm
Median length: 6.5 cm
Fish measured: 126
Survey locations: 5

Individual EA measurements

Largest measured bitterling

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

Length	Survey date	Survey location	Survey ID
9.9 cm	26 Sept 2016	Holywell	149406
7.5 cm	11 Oct 2019	Pike & Eel	155823
7.3 cm	11 Oct 2019	Pike & Eel	155823
7.3 cm	11 Oct 2019	Pike & Eel	155823
7.2 cm	11 Oct 2019	Pike & Eel	155823
7.2 cm	27 Sept 2013	Pike & Eel	138945
7.1 cm	11 Oct 2019	Pike & Eel	155823
7.1 cm	11 Oct 2019	Pike & Eel	155823
7.1 cm	11 Oct 2019	Pike & Eel	155823
7 cm	11 Oct 2019	Pike & Eel	155823

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 surveyed	First recorded	Last recorded	Visits finding bitterling
Pike & Eel	10 Sept 2010	11 Oct 2019	4
US Dolphin Meadow	2 Oct 2019	2 Oct 2019	1
Houghton	1 Oct 2019	1 Oct 2019	1
Holywell	25 Sept 2013	26 Sept 2016	2
Brownshill Pumping Station (Eel Monitoring)	2 May 2007	2 May 2007	1

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

2007–2019

Survey records by year

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

107

008

009

110

011

012

213

014

015

216

017

018

319

Fish measured by surveyors

Measured length distribution

See how the 126 measured fish were spread across different length ranges.

Smallest: 5.1 cm
Lower quarter: 6.2 cm
Median: 6.5 cm
Upper quarter: 6.8 cm
Largest: 9.9 cm

0–99 mm

126

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Middle Ouse

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

Perch Roach Pike Bleak Gudgeon Common bream

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 →