Species List

List of non-native species for which risk assessments were conducted:


  • Astacus astacus (Noble Crayfish)
  • Astacus leptodactylus (Turkish Crayfish)
  • Bufo bufo (Common Toad)
  • Capreolus capreolus (Roe Deer)
  • Corbicula fluminea (Asian River Clam)
  • Crepidula fornicata (Slipper Limpet)
  • Cyprinus carpio (Carp)
  • Hydropotes inermis (Chinese Water Deer)
  • Leuciscus cephalus  (Chub)
  • Muntiacus reevesi (Muntjac Deer)
  • Orconectes limosus (Spiny-cheek Crayfish)
  • Pacifastacus leniusculus (Signal Crayfish)
  • Procambarus clarkii (Red Swamp Crayfish) 
  • Procambarus spp(Marbled Crayfish) 
  • Rana catesbeiana (American Bullfrog)
  • Strix aluco (Tawny Owl)
  • Sus scrofa (Wild Boar)
  • Tamias sibiricus (Siberian Chipmunk)


  • Allium triquetrum (Three-cornered Leek)
  • Aponogeton distachyos (Cape Pondweed)
  • Azolla filiculoides (Water Fern)
  • Carpobrotus edulis  (Hottentot-fig)
  • Crassula helmsii (Australian Swamp Stonecrop)
  • Egeria densa (Large-flowered Waterweed)
  • Elodea canadensis (Canadian Pondweed)
  • Elodea nuttallii (Nuttall’s Pondweed)
  • Gunnera manicata (Brazilian Giant-rhubarb)
  • Gunnera tinctoria (Giant-rhubarb)
  • Hippophae rhamnoides (Sea-buckthorn)
  • Hyacinthoides hispanica (including H. non-scripta x H. hispanica) (Spanish Bluebell)
  • Hydrocotyle ranunculoides (Floating Pennywort)
  • Impatiens glandulifera (Himalayan Balsam)
  • Juncus planifolius (Broad-leaved Rush)
  • Lagarosiphon major (Curly-leaved Waterweed)
  • Ludwigia (L. grandiflora, L. peploides and L. hexapetala) (Water-primrose)
  • Lysichiton americanus (American Skunk-cabbage)
  • Myriophyllum aquaticum (Parrots Feather)
  • Nymphoides peltata (Fringed Water-lily)
  • Persicaria perfoliata (Mile-a-minute Weed)
  • Pistia stratiotes (Water Lettuce)
  • Rhododendron ponticum  (including R. x superponticum) (Rhododendron)
  • Rubus spectabilis (Salmonberry)

The non-native species chosen for risk assessment were those subject to trade or potentially subject to trade.