Crusians were brought over from Europe with common carp and mirror carp well over 100 years ago. In a lot of places they've been around longer than largemouth bass, brown trout, and rainbow trout. I've caught a lot of them all around NJ, lots of them in the Rahway River and ponds around it. They look a lot like common carp, the best way to tell the difference is common carp have barbels and crucians don't. Predators like to eat them too
