There are some species that have been introduced almost world wide; these are noted in the article on introduced species and are not reproduced here unless they are a particular problem in the region under consideration.

Species that have been introduced to particular parts of the world include:

Table of contents
1 Australia
2 Great Britain
3 Hawaiian Islands
4 New Zealand
5 North America

Australia

Great Britain

Mammals

Birds

Fish

  • Zander
  • Wels Catfish
  • Rainbow Trout
  • Orfe
  • Grass carp
  • Bitterling

Amphibians

Reptiles

  • European pond terrapin
  • Wall Lizard

Crustaceans

  • Signal Crayfish
  • Chinese Mitten crab
  • Darwins barnacle

Insects

Plants

  • Japanese Knotweed
  • Rhododendron
  • Oxford Ragwort
  • Hottentot fig
  • Fox and Cubs
  • Jewelweed
  • Giant Hogweed
  • Willow herb
  • Evening Primrose
  • Water Fern
  • Autumnal Crocus
  • Pigmy Weed
  • Least Duckweed
  • Canada Pond Weed
  • Bermuda Buttercup
  • Guernsey Fleabane
  • Rhododendron Floating Pennywort
  • Purple Dewplant
  • Himalayan Balsam
  • Field Speedwell
  • Purple Pitcher

Hawaiian Islands

Birds

New Zealand

Mammals

Birds

North America

Mammals

Birds

Fish

Crustaceans

Mollusks

Insects

Plants

  • Eurasian Water-milfoil from Europe, Asia and northern Africa
  • Ice Plant from South Africa
  • Prickly Pear from South Africa
  • Eucalypts from Australia
  • Lonicera japonica -- Japanese honeysuckle
  • Lonicera maackii -- Amur honeysuckle
  • Rosa multiflora -- multiflora rose
  • Lythrum salicaria -- Purple loosestrife
  • Pueraria montana -- kudzu (aka Pueraria lobata)
  • Celastrus orbiculatus -- oriental bittersweet
  • Elaeagnus umbellata -- autumn-olive
  • Alliaria petiolata -- garlic-mustard
  • Hydrilla verticillata -- Hydrilla from India and Sri Lanka
  • Trapa natans -- Water chestnut from Eurasia
  • Eichhornia crassipes -- Water hyacinth from South America
  • Pistia stratiotes -- Water lettuce from South America
  • Ipomoea aquatica -- Water spinach from India and southeast Asia
  • Arundo donax -- Giant reed from the Mediterranean
  • Conium maculatum -- Poison hemlock from Europe
  • Salvinia molesta -- Giant salvinia from Brazil
  • Hedera helix -- English ivy from Europe
  • Fucus serratus -- Rockweed from Europe
  • Codium fragile subsp. tomentosoides -- Green sea fingers