The image shows a large group of fish swimming in a tank or pool. The fish appear to be of different sizes and colors, with some being white and others being darker. The water is clear, and the fish seem to be moving around freely. The tank has a metal or plastic structure, and there are some visible signs of water pollution or contamination, such as red and yellow stains on the water surface. The image also contains text in both English and Vietnamese, which may indicate that it was taken in Vietnam.