Crayfish: the invader threatening local species | CIHEAM Press Review | Scoop.it

An invasion of alien crayfish in Malta's natural freshwater streams is taking over the last haunts of some of the island's beloved species, a new study has found. 
Recently published in the Journal of Crustacean Biology, the study has revealed the extent of the invasion of freshwater valley systems in the Maltese islands by a number of introduced crayfish species.