The image is a close-up of a fish swimming in an aquarium. The fish appears to be a piranha, with a dark green body and black fins. It is swimming towards the right side of the image, with its head slightly tilted upwards. In the background, there are several other fish swimming around, also in the same direction. The water is dark and murky, and there are rocks and plants visible in the background. The image is taken from a low angle, looking up at the fish.