I've seen hundreds of carp in lakes and around Marina's where they were fed food pellets. What I'm wondering is whether or not those carp are considered to be "Grass Carp"? I need some grass carp to add to my 1-acre pond to help clean out the moss, etc. I can buy some small baby grass carp ( 4 to 6-inches)from a fish place. They have two different types. Diploid (can breed) and Triploid (sterile). The Triploid cost twice as much as the Diploid. I'm just wondering if the carp in my local lake are the same as the Diploid being sold? If so, i might just try and catch some larger carp to put into my pond. What do you guys think?