In the video, we see an aquarium with a pink fish swimming around. The fish is swimming near a rock structure in the tank. The rock structure has a hole in it, and a crab is visible inside the hole. The fish is swimming around the tank, and a human finger is pointing at the crab. The water in the tank is clear, and the gravel at the bottom of the tank is yellow. The fish appears to be healthy and active, and the crab is stationary inside the rock structure. The human finger is pointing at the crab, indicating that it is the focus of the video.