Rhinogobius zhoui is a species of goby fish native to China, specifically found in the Pearl River drainage basin. These small freshwater fish are known for their vibrant colors and interesting behaviors, making them popular among aquarium enthusiasts. Rhinogobius zhoui typically inhabit shallow, slow-moving streams with sandy or rocky substrates. In aquariums, they require similar conditions, including plenty of hiding places and a well-aerated environment. As with many gobies, they can be territorial, especially during breeding periods. Proper tank setup and compatible tank mates are essential for their well-being in captivity.