Roach · Rutilus rutilus

Roach in the Ivel Navigation

Largest measured roach: 30.3 cm

The largest roach measured in Environment Agency surveys of the Ivel Navigation was 30.3 cm, recorded at Clifton on 10 March 1989.

Across 770 measured roach, the median measured length was 11.8 cm.

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

See roach records across England →

Most recent observation2 September 2024Horse Bridge · 19 fish

Largest measured roach: 30.3 cm
Median length: 11.8 cm
Fish measured: 770
Survey locations: 2

Individual EA measurements

Largest measured roach

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
30.3 cm	10 Mar 1989	Clifton	29239
29.8 cm	26 May 1998	Clifton	29243
28.3 cm	21 May 1998	Horse Bridge	29242
27.8 cm	21 May 1998	Horse Bridge	29242
27.3 cm	26 May 1998	Clifton	29243
27.3 cm	26 May 1998	Clifton	29243
27.3 cm	11 Dec 1991	Clifton	29241
26.8 cm	13 Dec 1991	Horse Bridge	29240
26.8 cm	10 Mar 1989	Horse Bridge	29238
26.3 cm	26 May 1998	Clifton	29243

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 surveyed	First recorded	Last recorded	Visits finding roach
Horse Bridge	10 Mar 1989	2 Sept 2024	8
Clifton	10 Mar 1989	3 Aug 2016	6

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

1989–2024

Survey records by year

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

289

090

291

092

093

094

095

096

097

298

099

000

001

002

003

004

205

006

007

008

109

210

011

012

013

014

015

216

017

018

019

020

021

022

023

124

Fish measured by surveyors

Measured length distribution

See how the 770 measured fish were spread across different length ranges.

Smallest: 4.8 cm
Lower quarter: 9 cm
Median: 11.8 cm
Upper quarter: 16.8 cm
Largest: 30.3 cm

0–99 mm

243

100–199 mm

420

200–299 mm

106

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Ivel Navigation

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

Gudgeon Dace Pike Chub Minnow Perch

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 →