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Illinois, Indiana and Ohio
Rusty Crayfish are similar to native crayfish. They can be distinguished by their large black tipped claws and the rusty spots on the back of their torso. They range in length from 2-8 inches.
Rusty crayfish can force out or completely replace native crayfish, and can destroy plant bed abundance and diversity.
This species is primarily spread through inadvertent introductions by anglers. Females carry fertilized eggs, so a single release can start a population.
SD AIS Species
South Dakota Distribution: