Barbel · Barbus barbus

Barbel in the River Gade

Largest measured barbel: 53.5 cm

The largest barbel measured in Environment Agency surveys of the River Gade was 53.5 cm, recorded at Cassiobury Park on 3 June 2009.

Across 197 measured barbel, the median measured length was 34.7 cm.

Surveyors recorded weights for 17 barbel. The median was 1 lb 4.9 oz (0.593 kg) and the largest recorded weight was 2 lb 2.6 oz (0.98 kg).

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

See barbel records across England →

Most recent observation2 June 2010Cassiobury Park · 26 fish

Largest measured barbel: 53.5 cm
Median length: 34.7 cm
Fish measured: 197
Survey locations: 1

Individual EA measurements

Largest measured barbel

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
53.5 cm	3 Jun 2009	Cassiobury Park	117317
53.4 cm	2 Jun 2010	Cassiobury Park	121758
52.8 cm	17 Sept 2009	Cassiobury Park	118943
51.5 cm	3 Oct 2000	Cassiobury Park	75768
50.7 cm	3 Jun 2009	Cassiobury Park	117317
50.3 cm	2 Jun 2010	Cassiobury Park	121758
50.2 cm	2 Jun 2010	Cassiobury Park	121758
50.1 cm	2 Jun 2010	Cassiobury Park	121758
49.6 cm	2 Jun 2010	Cassiobury Park	121758
49.5 cm	2 Jun 2010	Cassiobury Park	121758

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

Explore the river

Where barbel were found

Each point marks a survey location with at least one barbel 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 barbel
Cassiobury Park	3 Oct 2000	2 Jun 2010	10

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

2000–2010

Survey records by year

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

100

001

002

103

104

105

106

107

108

209

110

Fish measured by surveyors

Measured length distribution

See how the 197 measured fish were spread across different length ranges.

Smallest: 4.5 cm
Lower quarter: 22.7 cm
Median: 34.7 cm
Upper quarter: 41.3 cm
Largest: 53.5 cm

0–99 mm

100–199 mm

200–299 mm

300–399 mm

400–499 mm

500–599 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 17 barbel. This is a subset of the measured fish and may not represent the whole population.

Lightest: 4.6 oz (0.13 kg)
Lower quarter: 1 lb 0.9 oz (0.478 kg)
Median: 1 lb 4.9 oz (0.593 kg)
Upper quarter: 1 lb 8.9 oz (0.706 kg)
Heaviest: 2 lb 2.6 oz (0.98 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the River Gade

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

Bullhead Minnow 3-spined stickleback Stone loach Brown / sea trout Roach

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 →