Are there fish in this pond?

I know there was but I don't know about now. I suppose fish can get to or already are in the pond. There is some vegetation and fallen trees. I also see many fowl who poke their heads into the water and I think they wouldn't be there if there were no fish. There is a small pond that has many fish and it drains into the larger pond that I'm talking about. But the streams that lead into it are very shallow and I don't know if a fish can go through it. I also have never caught a fish but I may be doing it wrong. Finally, I heard fish like to live around fallen foliage and there is a lot of that in the pond. Do you think I can catch anything and if there is any fish?