The video shows a man standing in front of a large fish tank. He is wearing a white t-shirt with a blue logo on it and has a beard. The man is speaking to the camera, and his expression changes as he talks. The fish tank is filled with water and has a yellow lid on top. There is a window behind the man, and the walls of the room are painted in a light color. The man appears to be giving a presentation or a tutorial related to the fish tank.