A yabby is a crayfish but a cray is not a yabby: what’s in a name?

Everyone knows what a yabby is, don’t they? Well, you would be surprised. Those charming little critters with nippers in your local dam may belong to the species Cherax destructor, also known as the common yabby, but they may also be juvenile spiny crayfish (genus Euastacus), adult burrowing crayfish (genus Engaeus) or another species within the genus Cherax, including gilgies, marron and redclaw.