Carp is entirly edible and some say it is very good as long as you gut it properly, in Canada and most of usa you can take home carp. in north America i don't even think there is a quota... but check
Carp eat aquatic plants such as algae and other vegetation in lakes and ponds. Being omnivorous, they also eat various invertebrates, scavenging on the bottom of rivers and digging up riverbeds for...
Goldfish are omnivors and will eat very young snails that have not yet developed their hard shell. If you have pond snails in your cold water tank, you have a very hard problem to fix. The only...
It depends on the size and the type of fish. If the fish are koi, they probably won't bother them. If they are smaller fish they most likely will eat them.