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| Species native
to the United Kingdom Introduced or alien species Alien species that present a threat to wildlife |
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Pool Frog - Pelophylax (formerly Rana) lessonae - Native |
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Identification Tailless amphibian. Slightly granular skin. A very aquatic frog, often difficult to locate, as they will dive into water at the slightest disturbance. The other Water Frogs found in the UK, including the non-native Pool Frog tend to be green. Our native Pool Frog is predominantly brown in colour with dark spots and a pronounced light, often yellowish, dorsal stripe. Very occasionally some green can be seen around the head. Distinguishable from other water frogs by relatively small size. Unlike Common Frogs , calling males have prominent whitish vocal sacs at side of mouth. Length 6 - 9 cms UK Distribution Now exists only in a couple of secret locations in East Anglia Status Extremely endangered. The last known native Pool Frog died in 1999. However, detailed analysis of the calls and genetics established that these were the same Northern clade as were found in Sweden. As a result a number of adults and tadpoles were re-introduced after health screening in 2005. Further re-introductions followed. The latest evidence suggests that the animals are now well established and are breeding. |
 (C) The Herpetological Conservation Trust |
| Breeding and
Spawn This species breeds much later than the Common Frog. The spawn appears in similar masses but the eggs tend to be much smaller. The initially tiny tadpoles grow quickly, but, being hatched later in the season will sometimes overwinter. Like the other water frogs, the tadpoles grow considerably larger than the Common frog. What else could it be? It can be distinguished from the Common frog by the dorsal stripe and the vocal sacs (in males) and from the other Water frogs by its smaller size and lack of green colouration. |
 (C) The Herpetological Conservation Trust |
| Where will I see a native Pool Frog? As previously stated their current locations are not generally known so you are most unlikely to see one for some years. |
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The native Pool Frog is an endangered species and protected under the Wildlife and Countryside Act 1981. It is an offence to disturb these toads in any way Kill, harm or injure them Cause damage to their habitat Possess, sell or trade them in any way |
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