Page 36 - How to Help a Hedgehog

Freshwater species fact file
25–50 g
20 cm
90g
White-clawed crayfish
12–15 cm
White-clawed crayfish look like miniature lobsters!
Vendace fish are now only found in a couple of lakes in the UK.
Vendace
A rare, small, silvery fish, which has been around since the last ice age and lives in deep, cold lakes. Many people thought it had already gone extinct.
12 cm
20 g
The only species of freshwater crayfish that is native to the British Isles, it is endangered by the introduction of non-native species like the American signal crayfish.
Freshwater pearl mussels cling on to the gills of salmon when they are first born.
Dolphins communicate using a variety of clicks and whistles.
Amazon river dolphin
100–160kg
2–3 m
Freshwater pearl mussel
Large, dark brown mussels that can live for more than 100 years! They live on the bottom of riverbeds, where they filter food out of the water.
Amphibians bask in the sun to keep warm.
A mammal that lives in South American rivers. It has a long, thin snout, small eyes and a grey-pink body. It eats a variety of river fish, including ferocious piranhas.
14–16cm
Great crested newt
A warty brown amphibian with a jagged crest along its back and a bright orange tummy. It prefers big ponds with lots of weeds and no fish.
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6–10g