narrow-clawed crayfish (astacus leptodactylus) in south of france

animal animals aquatic armoramer armored armourbrit astacidae astacus autumn background biotope cancer canker car carapace chitin chitinous craw crawfish crayfish crustaceans cuirass current dancer ecology environment fish france freshwater habitats indicators inhabitants invertebrate jack leptodactylus live lobster narrowclawed nature pollution resistant river riverside shell shellfish slowly south species stagnant standing still stream tank testa water wild wildlife