The video shows a close-up of a fish tank with a pineapple decoration. The tank is filled with small yellow gravel and a small fish can be seen swimming around. The fish is moving around the tank, exploring its surroundings. The pineapple decoration is placed on the left side of the tank and is partially submerged in the water. The fish appears to be a small, tropical species, possibly a cichlid or angelfish. The tank is well-lit, and the water is clear, allowing for a good view of the fish and its environment.