I live in indiana  and i was wanting to know if i could take a bass out of an public pond and keep it as a pet ?

Having knowing what I know now, I would say think about this carefully.

I bought Bass to stock a pond. After summer I thought I would bring one home for a LARGE 150 gallon fish tank I had at home. The reason .... people buy Piranhas or other exotic fish because they are thought to be "vicious". I put forth any game fish is FAR more viscous than store bought predators.

Well, I will tell you this, I preferred to have a Muskie or Northern Pike. I settled for a Bass.

Problem # 1 - Feeding. What are you going to feed this fish ? My thought was to buy minnows from the bait shop. OK that is what I did thinking a dozen would last a week or so. As I dumped them in the tank with the Bass, it gobbled every one up as it hit the water. YOU WILL GO BROKE feeding the fish.

Problem # 2 - Wild fish often have parasites. After the Bass, I wanted different fish "prettier" more interesting fish in that tank. Once filled and prepared for fish, I saw these tiny little 1/4" long squirming worms in the water. I used a chemical to destroy all life in that water. Drained and refilled the tank. Same thing. SO I caught a bunch of those worms and put the water in a jar. I called our local State University. I was shocked to find out I was invited to bring them to the Biology Department. So happens one of the foremost Parasitologists from the University of Georgia was there visiting. I found the Biology dept. and the correct room to find this Doctor. He put the sample under a microscope and showed me on a TV screen what it was seeing. "Nematoid Worms". A parasite. Thing is when I poisoned the water to destroy them ... last thing they do was reproduce. NEVER was that fish tank usable again for tropical fish.

I suggest you take a lesson from MY lesson.

Small fish are sold at feed stores for stalking ponds .  You could buy several small bass there and not need a fishing license or a minimum length . They sell them just every so often .  

You'd probably need a fishing license.  But otherwise I don't see why not.  I'm not sure how well a bass would do in captivity.  You should look into that first.