Ruffe · Gymnocephalus cernuus

Ruffe in the River Weaver

Largest measured ruffe: 12 cm

The largest ruffe measured in Environment Agency surveys of the River Weaver was 12 cm, recorded at Wewe05 on 13 September 2002.

Across 35 measured ruffe, the median measured length was 10.1 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 Weaver.

See ruffe records across England →

Most recent observation23 July 2026Wewe25 · 1 fish

Largest measured ruffe: 12 cm
Median length: 10.1 cm
Fish measured: 35
Survey locations: 3

Individual EA measurements

Largest measured ruffe

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
12 cm	13 Sept 2002	Wewe05	64240
11.9 cm	8 Jun 2004	Wewe05	80204
11.5 cm	8 Jun 2004	Wewe05	80204
11.5 cm	8 Jun 2004	Wewe05	80204
11.5 cm	13 Sept 2002	Wewe05	64240
11.2 cm	21 Jul 2003	Wewe05	76411
11.2 cm	21 Jul 2003	Wewe05	76411
11 cm	8 Jun 2004	Wewe05	80204
10.8 cm	21 Jul 2003	Wewe05	76411
10.6 cm	21 Jul 2003	Wewe05	76411

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 surveyed	First recorded	Last recorded	Visits finding ruffe
Wewe25	23 Jul 2026	23 Jul 2026	1
Wewe24	13 Jul 2006	13 Jul 2006	1
Wewe05	13 Sept 2002	10 Jul 2006	4

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

2002–2026

Survey records by year

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

102

103

104

005

206

007

008

009

010

011

012

013

014

015

016

017

018

019

020

021

022

023

024

025

126

Fish measured by surveyors

Measured length distribution

See how the 35 measured fish were spread across different length ranges.

Smallest: 7.4 cm
Lower quarter: 9.5 cm
Median: 10.1 cm
Upper quarter: 10.7 cm
Largest: 12 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Weaver

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

Gudgeon Stone loach Roach Chub Perch 3-spined stickleback

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 →