What are rusty crayfish and how can I stop their spread?
The rusty crayfish is a large, aggressive species of freshwater crayfish. It is an invasive bait animal that has been introduced by anglers into 14 states and Canada. They were recently found in Maryland in portions of the Potomac and Susquehanna rivers.
You can identify a rusty crayfish by a rust-colored spot on either side of the body just above their tail. Their claws are grayish-green to reddish-brown and have black bands on the tips.
Rusties mature quickly and can grow to be larger than 5 inches. Rusties can dramatically change the...
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