What is another word for astacus?
Pronunciation: [ɐstˈakəs] (IPA) 
Astacus is a genus of freshwater crayfish that includes multiple species. Some synonyms for Astacus include crawfish, crawdad, crayfish, freshwater lobster, mountain lobster, and yabby. Although these synonyms are commonly used interchangeably, they can also refer to different species of crayfish from within the Astacus genus.
Crawfish or crawdad is the most commonly used synonym in the United States, whereas crayfish is a more general term used in Europe and other areas of the world. Freshwater lobster is another synonym for Astacus crayfish that emphasizes their large size and rich flavor when cooked. Mountain lobster and yabby are less commonly used synonyms that refer to specific species of Astacus found in the mountains of Europe and Australia, respectively.
