Amur Carp, (or grass carp), were introduced into the United States in the early 1960s as a way to control aquatic vegetation in ponds, lakes, and streams. Because of their very specific reproductive needs they don't pose a threat of becoming over abundant in most waters, unlike their other Asian Carp cousins. They can grow up to 90 lbs, but because of their primarily herbivorous diet, can be difficult to catch. Through experimentation, however, I've come up with a dough bait that they seem to love. I often catch up to two dozen in a day at Lake Cahuilla near Palm Springs where I live. (message me on Simply Fishing with Michael for the recipe)