RiverFish

Ruffe · Gymnocephalus cernuus

Ruffe in the River Middle Ouse

Largest measured ruffe: 15.3 cm

The largest ruffe measured in Environment Agency surveys of the River Middle Ouse was 15.3 cm, recorded at Brampton on 25 September 1989.

Across 3,419 measured ruffe, the median measured length was 8.8 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 ruffe records across England →

Most recent observation1 October 2019Houghton · 4 fish
Largest measured ruffe
15.3 cm
Median length
8.8 cm
Fish measured
3,419
Survey locations
37

Individual EA measurements

Largest measured ruffe

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

LengthSurvey dateSurvey locationSurvey ID
15.3 cm25 Sept 1989Brampton29124
14.4 cm29 Sept 2016Portholme Meadow149465
13.3 cm10 Sept 1992Bluntisham29208
13.3 cm11 Aug 1989DS Barford Power Station29115
13.3 cm3 Aug 1989Barford Bridge29110
13.3 cm31 Jul 1989Cardington Navigation29107
12.8 cm24 Jun 1992Kelpie Marina29131
12.8 cm10 Jun 1992Longholme29125
12.8 cm11 Aug 1989DS Barford Power Station29115
12.8 cm9 Aug 1989Barford Power Station29114

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

Explore the river

Where ruffe were found

Each point marks a survey location with at least one ruffe 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 ruffe
Houghton4 Oct 19891 Oct 20196
St Neots Common14 Aug 19895 Oct 20186
Portholme Meadow27 Sept 198929 Sept 201610
Eynesbury19 Aug 201519 Aug 20151
Longholme10 Jun 199217 Aug 20153
Pike & Eel8 Nov 198927 Sept 201311
Holywell14 Aug 199225 Sept 20134
US Dolphin Meadow24 Oct 198924 Sept 20136
Little Paxton18 Aug 19891 Sept 20083
Offord Triangle17 Jul 199228 Aug 20083
Hartford Church29 Sept 198911 Aug 20085
Mow Fen2 Nov 19894 Aug 20033
Brampton25 Sept 19893 Oct 20014
Barford Bridge3 Aug 19891 Oct 20014
Earith17 Sept 199217 Aug 19993
Bluntisham10 Nov 19896 Aug 19994
St Ives26 Oct 19892 Aug 19993
Hemingford Abbots5 Oct 198926 Jul 19993
Houghton Lock3 Oct 198919 Jul 19993
Hartford12 Oct 198913 Jul 19993
Castle Hills Huntingdon6 Aug 199212 Jul 19992
Portholme Lock28 Sept 19899 Jul 19993
Buckden Marina15 Sept 198914 Oct 19983
DS Samual Jones17 Aug 198912 Oct 19983
Little Paxton Nature Reserve4 Sept 198915 Sept 19983
Offord Intake12 Sept 198914 Sept 19983
Riverside Park1 Jul 19922 Sept 19982
DS Barford Power Station11 Aug 198926 Aug 19983
Barford Power Station9 Aug 198925 Aug 19983
Wyboston Lakes7 Aug 198924 Aug 19983
Blunham4 Aug 198913 Aug 19983
Cardington Navigation31 Jul 19895 Aug 19983
Meadow Lane St Ives29 Oct 199024 Aug 19922
Dolphin Meadow25 Oct 198913 Aug 19922
Hemingford Grey23 Oct 198911 Aug 19922
Kelpie Marina8 Aug 198924 Jun 19922
Renhold2 Aug 198915 Jun 19922

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

1989–2019

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 3,419 measured fish were spread across different length ranges.

Smallest
3.7 cm
Lower quarter
8.3 cm
Median
8.8 cm
Upper quarter
9.3 cm
Largest
15.3 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 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 →