They range in size from about 8 inches for the largest, the Tennessee bottlebrush crayfish, to about half an inch for the smallest, the twisted dwarf crayfish. Crayfish are also known as crawdads, ...

Researchers in Germany have discovered a new species of crayfish after it was collected ... for 37 years — turns out to be new species →'Dwarf'-like creature — kept in terrarium for 5 ...