River Thet
18 fish species have been recorded at 9 locations along the River Thet.
- Fish species
- 18
- Places surveyed
- 9
- Survey visits
- 36
- Records span
- 1988–2024
Local EA evidence
Where fish were recorded
Choose a point on the map to see what was recorded there.
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River conditions
Environment Agency evidence
Fish found in this river
Open a linked fish for detailed measurements, or use the map filter above to compare survey locations.
| Fish | Sites | Most recent | Fish counted | Measured length | Measured weight |
|---|---|---|---|---|---|
| RoachRutilus rutilus | 9 | 2024 | 4,279 | Median: 12.3 cm3,868 fish measuredLargest measured roach: 33.3 cm | — |
| PikeEsox lucius | 9 | 2024 | 323 | Median: 33.5 cm309 fish measuredLargest measured pike: 95.8 cm | — |
| GudgeonGobio gobio | 9 | 2024 | 588 | Median: 9.3 cm492 fish measuredLargest measured gudgeon: 13.3 cm | — |
| PerchPerca fluviatilis | 9 | 2024 | 433 | Median: 12.4 cm359 fish measuredLargest measured perch: 32.8 cm | — |
| DaceLeuciscus leuciscus | 8 | 2024 | 2,225 | Median: 11.3 cm2,140 fish measuredLargest measured dace: 26.3 cm | — |
| European eelAnguilla anguilla | 8 | 2024 | 115 | Median: 49 cm10 fish measuredLargest measured european eel: 70 cm | Median: 9.5 oz (0.27 kg)8 fish weighedLargest measured: 1 lb 7.1 oz (0.654 kg) |
| BullheadCottus gobio | 8 | 2024 | 86 | Median: 6.4 cm77 fish measuredLargest measured bullhead: 8.9 cm | — |
| RuddScardinius erythrophthalmus | 8 | 2024 | 58 | Median: 8.1 cm57 fish measuredLargest measured rudd: 34.3 cm | — |
| ChubLeuciscus cephalus | 7 | 2024 | 50 | Median: 19.8 cm45 fish measuredLargest measured chub: 48.3 cm | — |
| Common breamAbramis brama | 6 | 2024 | 30 | Median: 11.3 cm25 fish measuredLargest measured common bream: 33.3 cm | — |
| 3-spined sticklebackGasterosteus aculeatus | 4 | 2024 | 21 | Median: 3.7 cm19 fish measuredLargest measured 3-spined stickleback: 5.3 cm | — |
| MinnowPhoxinus phoxinus | 3 | 2018 | 100 | Median: 4.8 cm28 fish measuredLargest measured minnow: 8.3 cm | — |
| RuffeGymnocephalus cernuus | 3 | 1995 | 36 | Median: 8.8 cm36 fish measuredLargest measured ruffe: 14.8 cm | — |
| Brook lampreyLampetra planeri | 3 | 2024 | 10 | Median: 13.3 cm9 fish measuredLargest measured brook lamprey: 17.5 cm | Median: 0.1 oz (0.004 kg)9 fish weighedLargest measured: 0.7 oz (0.02 kg) |
| Stone loachBarbatula barbatula | 2 | 2012 | 26 | Median: 7.9 cm8 fish measuredLargest measured stone loach: 8.2 cm | — |
| TenchTinca tinca | 2 | 2012 | 10 | Median: 16.8 cm2 fish measuredLargest measured tench: 18.3 cm | — |
| Golden goldfishCarassius auratus | 1 | 1993 | 1 | Recorded length: 13.3 cm1 fish measured | — |
| Spined loachCobitis taenia | 1 | 1995 | 1 | Recorded length: 7.3 cm1 fish measured | — |
EA surveys have recorded these fish at particular sites and times. Absence from a survey is not evidence that a species is absent from the river. Every valid individual length and weight is retained, with its sample size shown.
Useful context
This page follows survey locations along the main River Thet. Tributaries and unrelated rivers with similar names are kept separate.
The map shows past fish records, not fishing access or a promise of what you’ll catch today.
How RiverFish handles the data →