The only experience I've had with carp was quite awhile ago...I was at a local "puddle" (3feet wide, 5 inches deep) looking for frogs or something with my friends. Instead, we noticed sometihng dark in the water. My friend poked it with a stick and a carp starts swimming around, and in this little puddle! Infact, there were two in there! We didn't bother taking 'em home though.