Invertebrates

Below are invertebrates introduced through the marketplace.

Not all are causing harm, but many are invasive in the U.S. 

Annelids

Branchiura sowerbyi
Tubificid worm

Bryozoans

Lophopodella carteri
Freshwater bryozoan

Coelenterates (Ctenophores/Cnidarians)

Cordylophora caspia
Freshwater hydroid
Craspedacusta sowerbyi
Freshwater jellyfish

Crustaceans

Argulus japonicus   
Japanese fishlouse
Carcinus maenas
Green crab
Cherax quadricarinatus
Australian redclaw crayfish
Cyclops strenuus
Copepod
Eriocheir sinensis
Chinese mitten crab
Geothelphusa dehaani 
Freshwater crab
Lernaea cyprinacea  
Anchor worm
Macrobrachium lar
Tahitian prawn
Macrobrachium macrobrachion 
Brackish river prawn
Macrobrachium rosenbergii  
Giant river prawn
Mesocyclops ogunnus  
Copepod
Neoergasilus japonicas
Parasitic copepod
Paracyclops bromeliacola 
Copepod
Penaeus monodon   
Asian tiger shrimp
Skistodiaptomus pallidus 
Calanoid copepod

Mollusks

Cipangopaludina chinensis
Chinese mystery snail
Cipangopaludina japonica 
Japanese mystery snail
Corbicula fluminea   
Asian clam
Physella acuta  
European physa
Pomacea bridgesi
Spiketop apple snail
Pomacea canaliculata   
Channeled apple snail
Pomacea haustrum  
Titan apple snail
Pomacea maculata
Giant apple snail
Radix auricularia 
European ear snail
Viviparus georgianus 
Banded mystery snail

Platyhelminthes

Bothriocephalus acheilognathi
Asian tapeworm