| Aquatic creatures in the MCG Reserves | |||||||||||
| Abundancy (Ab.) Key: D - Dominant, A - Abundant, F - Frequent, O - Occasional, R - Rare | |||||||||||
| Type | Common name | Scientific Name | Main Habitat | Ab. | Comment | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
| Mollusc | Acute Bladder Snail | Physella acuta | Scrape | A | Y | Y | Y | Y | Y | n/r | |
| Mollusc | Great Pond Snail | Lymnaea stagnalis | Field Mill, Scrape | A | Y | Y | Y | Y | Y | n/r | |
| Mollusc | Great Ramshorn | Planorbarius corneus | Scrape | A | Y | Y | Y | Y | Y | n/r | |
| Mollusc | Keeled Ramshorn | Planorbis carinatus | Scrape | A | Y | Y | Y | Y | Y | n/r | |
| Mollusc | Marsh Pond Snail | Stagnicola palustris | Scrape | O | Y | Y | n/r | ||||
| Mollusc | Pea Cockle | Pisidium amnicum | River | A | Y | Y | Y | Y | Y | n/r | |
| Mollusc | River Snail | River | O | TBC | Y | n/r | |||||
| Mollusc | Wandering Snail | Ampullaceana balthica | Scrape | A | Y | Y | Y | Y | Y | n/r | |