RiverFish

Roach · Rutilus rutilus

Roach in the River Middle Ouse

Largest measured roach: 28.8 cm

The largest roach measured in Environment Agency surveys of the River Middle Ouse was 28.8 cm, recorded at Mow Fen on 22 August 1995.

Across 56,119 measured roach, the median measured length was 9.3 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 Middle Ouse.

See roach records across England →

Most recent observation22 October 2025Holywell · 1 fish
Largest measured roach
28.8 cm
Median length
9.3 cm
Fish measured
56,119
Survey locations
41

Individual EA measurements

Largest measured roach

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

LengthSurvey dateSurvey locationSurvey ID
28.8 cm22 Aug 1995Mow Fen29213
28.8 cm2 Oct 1989Castle Hills Huntingdon29165
28.7 cm24 Sept 2013US Dolphin Meadow138886
28.3 cm4 Aug 1999Mow Fen29220
28.3 cm22 Aug 1995Mow Fen29213
28.3 cm6 Jul 1992St Neots Common29136
27.8 cm22 Aug 1995Mow Fen29213
27.8 cm22 Aug 1995Mow Fen29213
27.8 cm22 Aug 1995Mow Fen29213
27.8 cm18 Aug 1989Little Paxton29119

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

Explore the river

Where roach were found

Each point marks a survey location with at least one roach 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 roach
Holywell14 Aug 199222 Oct 202514
Hemingford Meadow21 Oct 202521 Oct 20251
Portholme Meadow27 Sept 198915 Oct 202517
Pike & Eel8 Nov 198911 Oct 201916
US Dolphin Meadow24 Oct 19892 Oct 201915
Houghton4 Oct 19891 Oct 20197
St Neots Common14 Aug 19895 Oct 20186
Eynesbury19 Aug 20153 Oct 20182
Kelpie Marina8 Aug 19892 Oct 20187
Longholme24 Jul 19891 Oct 20187
Offord Triangle13 Sept 198921 Aug 20157
Hartford Church29 Sept 198920 Aug 201010
Renhold2 Aug 198924 Sept 20085
DS Barford Power Station11 Aug 19895 Sept 20085
Little Paxton18 Aug 19891 Sept 20085
Brownshill Pumping Station (Eel Monitoring)2 May 20072 May 20071
Hermitage Lock Drain (Eel Monitoring)25 Apr 200725 Apr 20071
Little Paxton Nature Reserve4 Sept 19891 Dec 20064
Dolphin Meadow25 Oct 19892 Sept 20034
Hemingford Grey23 Oct 198928 Aug 20034
Castle Hills Huntingdon2 Oct 198926 Aug 20034
Mow Fen2 Nov 19894 Aug 20035
St Ives26 Oct 198925 Jul 20035
Brampton25 Sept 19893 Oct 20014
Barford Bridge3 Aug 19891 Oct 20014
Earith17 Sept 199217 Aug 19993
Bluntisham10 Nov 19896 Aug 19994
Meadow Lane St Ives29 Oct 19903 Aug 19994
Hemingford Abbots5 Oct 198926 Jul 19993
Houghton Lock3 Oct 198919 Jul 19993
Hartford12 Oct 198913 Jul 19993
Portholme Lock28 Sept 19899 Jul 19993
Buckden Marina15 Sept 198914 Oct 19983
DS Samual Jones17 Aug 198912 Oct 19983
Offord Intake12 Sept 198914 Sept 19983
Riverside Park11 Aug 19892 Sept 19983
Barford Power Station9 Aug 198925 Aug 19983
Wyboston Lakes7 Aug 198924 Aug 19983
Blunham4 Aug 198913 Aug 19983
Willington1 Aug 198911 Aug 19983
Cardington Navigation31 Jul 19895 Aug 19983

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

1989–2025

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 56,119 measured fish were spread across different length ranges.

Smallest
1.8 cm
Lower quarter
7.8 cm
Median
9.3 cm
Upper quarter
11.3 cm
Largest
28.8 cm

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 Pike Bleak Gudgeon Common bream Dace

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 →